PRODUCTS

DIAMINOPYRIMIDINE OXIDE

Diaminopyrimidine oxide is used in various hair cosmetics like shampoos, oil, conditioners, etc. to combat the loss of hair.
Diaminopyrimidine oxide helps in the rejuvenation of hair roots so that growth of healthy hair can persist.
Diaminopyrimidine oxide reinforces hair anchoring as well as strengthens the hair from root to tip.

CAS Number: 74638-76-9
EINECS No.: 616-121-2
Chem/IUPAC Name: 2,4-Pyrimidinediamine, 3-oxide
Molecular formula: C4H6N4O
Molar mass: 126.12 g/mol

SYNONYMS:
Aminexil, 113275-13-1, RefChem:111997, DTXSID301336116, 74638-76-9, Kopexil, 2,4-diaminopyrimidine-3-oxide, 2,4-Diamino pyrimidine-3-oxide, 2,4-Pyrimidinediamine, 3-oxide, diaminopyrimidine oxide, 2,6-DIAMINOPYRIMIDIN-1-IUM-1-OLATE, Mexoryl SAG, 2,4-Diaminopyrimidine 3-N-oxide, 3-hydroxy-2-iminopyrimidin-4-amine, Minoxidil Impurity 9, AMINEXIL [WHO-DD], 2,4-Diaminopyrimidin-3-oxid, SCHEMBL242538, 2,4-Pyrimidinediamine 3-oxide, orb1705375, DTXSID40996155, AKOS025401383, AC-13770, BS-51568, FD182422, F76043, Q27247520, 2,4-Pyrimidinediamine 3-oxide, Aminexil, 2,4-Pyrimidinediamine, 3-oxide (9CI), pyrimidine-2,4-diamine 3-oxide, 2,4-Diaminopyrimidine 3-N-oxide, Kopexil, 2,4-DIAMINO PYRIMIDINE-3-OXIDE, 2,4-DIAMINO PYRIMIDINE-3-OXIDE, Kopexil, 2,4-diaminopyrimidine-3-oxide, 2,4-Diaminopyrimidine 3-N-oxide, 2,4-DIAMINO PYRIMIDINE-3-OXIDE, 2,4-Pyrimidinediamine,3-oxide, 2,4-Diaminopyrimidine 3-N-oxide, Kopexil, 2,6-Diaminopyrimidin-1-ium-1-olate, Diaminopyrimidine Oxide, Aminexil, 2,4‑Pyrimidinediamine‑3‑oxide, 2,4‑Diamino‑Pyrimidine‑3‑N‑oxide, Kopexil, Aminexil, 2,4‑diaminopyrimidine‑3‑oxide, 2,4‑pyrimidinediamine 3‑oxide, diaminopyrimidine oxide, 2,3-Dihydro-3-hydroxy-2-imino-4-pyrimidinamine, 2,4-Diaminopyrimidine 3-N-oxide, Aminexil, Kopexil, Aminexil, 2,4-Diaminopyrimidine-3-oxide, 2,4-pyrimidinediamine 3-oxide, diaminopyrimidine oxide

Diaminopyrimidine oxide is a synthetic compound derived from the pyrimidine family, a class of aromatic heterocyclic molecules structurally related to nucleic acid bases (e.g., thymine, cytosine).

Diaminopyrimidine oxide's unique combination of amino (-NH₂) and N-oxide functional groups gives it potential bioactive properties, particularly in cosmetic and pharmaceutical applications.
Diaminopyrimidine oxide is a chemical compound used to increase the volume of hair in the growth stage by working on the deep structure of the roots.

Diaminopyrimidine Oxide is a white to off-white crystalline powder that is used for increasing the volume of hair.
Diaminopyrimidine oxide (INCI name kopexil, trade name Aminexil) is a chemical compound used to increase the volume of hair in the growth stage by working on the deep structure of the roots.

Diaminopyrimidine oxide rejuvenates the hair roots so that healthy hair growth can persist.
The perifollicular fibrosis is a condition in which collagen around the roots becomes rigid, tightens, and pushes the hair out.

Diaminopyrimidine oxide helps in softening of the collagen.
Diaminopyrimidine oxide is not approved for use as a drug in the United States or in Europe.
Diaminopyrimidine Oxide is a chemical compound that is used to increase the volume of hair specifically the hair that is in the growth stage.

Compared with minoxidil, Diaminopyrimidine oxide has no effect on blood pressure and better safety.
Diaminopyrimidine oxide is popularly called the trade name Aminexil or Kopexil, has the effect of increasing the amount of hair in the growth phase by working on the deep structure of the hair follicle.

Diaminopyrimidine oxide (also known by its INCI name Diamino Pyrimidine Oxide, and trade name Aminexil) is a small synthetic molecule used primarily in hair‑care formulations.
Chemically, Diaminopyrimidine oxide is related to pyrimidine derivatives, specifically a pyrimidine N‑oxide.

Diaminopyrimidine oxide’s structurally similar to minoxidil — but it’s not the same molecule, and its mechanism is distinct and not fully proven.
Diaminopyrimidine oxide (INCI name diaminopyrimidine oxide, trade name Aminexil) is a chemical compound similar to minoxidil.
Minoxidil was originally used to treat high blood pressure; a side effect was increased body hair.

Both compounds have been used for therapy of alopecia.
Diaminopyrimidine oxide is a new treatment for hair loss.
Diaminopyrimidine oxide comes from Minoxidil.
Diaminopyrimidine oxide's goal is to give more help with fewer risks.

Diaminopyrimidine oxide boosts blood flow to the scalp and feeds the hair.
Diaminopyrimidine oxide also lowers the hormone DHT.
DHT can make hair thin in many people.

USES and APPLICATIONS of DIAMINOPYRIMIDINE OXIDE:
Primary Use: Diaminopyrimidine oxide is widely used as a hair-loss active ingredient (e.g., in anti-hair-fall serums or scalp treatments).
Diaminopyrimidine oxide works by increasing the blood flow to the hair follicles through dilation of blood vessels.
Diaminopyrimidine oxide is used in various hair cosmetics like shampoos, oil, conditioners, etc. to combat the loss of hair.

Diaminopyrimidine oxide helps in the rejuvenation of hair roots so that growth of healthy hair can persist.
Diaminopyrimidine oxide reinforces hair anchoring as well as strengthens the hair from root to tip.
Diaminopyrimidine oxide is easily absorbed by the skin.

Diaminopyrimidine oxide acts as a hair growth stimulant.
Diaminopyrimidine oxide strengthens hair root, thickens hair and prevents premature hair loss.
Diaminopyrimidine oxide is used in serum, spray, oils, lotions, gels, conditioners and shampoos for hair.

Diaminopyrimidine oxide is also used in eye liners and mascaras.
Diaminopyrimidine oxide is a substance designed to counteract hair loss.
Already in small doses Diaminopyrimidine oxide is active to stop the hair loss.

The advantage is that Diaminopyrimidine oxide actively combats hair loss in very small doses as low as 0.5% and thus shows no systemic side effects.
Another advantage is that Diaminopyrimidine oxide in small concentrations stimulates hair growth.

Diaminopyrimidine oxide soften the rigid collagen around hair follicles by inhibiting lysine hydroxylase mRNA expression.
Diaminopyrimidine oxide prevents perifollicular fibrosis by stimulating collagen formation and inhibiting the premature exhaustion of the hair root.

Hair loss is influenced from all sides, The combination of Diaminopyrimidine oxide and Kopyrrol, a mutual potentiation of the growth effect is triggered on the hair, but without triggering an increased apoptosis of the hair roots.
The combination of Diaminopyrimidine oxide and Kopyrrol will result in strong hair growth.

Diaminopyrimidine Oxide can be used in anti-hair loss care products such as hair water, hair milk, conditioner, scalp lotion, and hair spray.
Diaminopyrimidine Oxide is widely used in hair care products.

Many cases of hair loss are often accompanied by "perifollar fibrosis", that is, the collagen fibers around the hair follicles become thicker and harder, which hinders the insertion of the hair bulb into the deep layer of the dermis, causing the hair follicles to be squeezed and unable to transport nutrients, resulting in increasingly fragile and soft hair.

Diaminopyrimidine Oxide is a relatively safe hair-fixing ingredient that can effectively soften the keratin around the hair follicles and prolong the life of the hair follicles; and it has no side effects.

Persistent use of Diaminopyrimidine oxide can achieve the purpose of long-term hair loss prevention.
During the growth stage, Diaminopyrimidine oxide acts on the deep structure of the hair root to increase the number of hair, restore the vitality of the hair root, and enable the hair to continue to grow healthily.

The fibrosis around the hair follicles causes the collagen around the roots to harden and tighten, leading to hair loss.
Diaminopyrimidine Oxide helps soften collagen and can be used to soften collagen.

Diaminopyrimidine oxide can be used in hair products to treat hair loss caused by premature hair root loss.
Diaminopyrimidine Oxide prevents hair loss (hair follicle repair), inhibits hair loss, strengthens hair roots, and promotes hair growth.
Diaminopyrimidine Oxide is suitable for hair oil, conditioner, hair tonic, shampoo, hair spray, and treatment of seasonal hair loss.

Diaminopyrimidine Oxide helps soften collagen and can be used in hair care products to treat hair loss caused by premature hair root loss.
Diaminopyrimidine Oxide can inhibit the activity of 5α-reductase, thereby reducing the conversion of testosterone into dihydrotestosterone.
Diaminopyrimidine oxide is used commonly in all types of hair products from shampoo to conditioner, lotions, gels, serums, sprays & oils.

Diaminopyrimidine oxide can also be found in eyelash products & products for the eyebrows as well as eyeliners & mascaras.
Diaminopyrimidine Oxide is an aromatic amine oxide.
Use of Diaminopyrimidine oxide: hair care formulations to prevent increased hair loss

Conditions of use of Diaminopyrimidine oxide: the cosmetic preparation is a solution containing 1.5% 2,4-DPO in ethanol/water.
Diaminopyrimidine oxide is available as a set of vials, each containing 6 ml, corresponding to a total of 90 mg 2,4-DPO per vial and per treatment.

The recommendations for use of Diaminopyrimidine oxide specify application of one vial per treatment to the scalp at least three times a week.
Diaminopyrimidine oxide is a compound similar to [minoxidil] which is used to aid in hair growth.

Diaminopyrimidine oxide is used to treat hair loss
Diaminopyrimidine oxide is a compound similar to minoxidil which is used to aid in hair growth.
Diaminopyrimidine oxide is used by restoring hair roots

Diaminopyrimidine oxide is commonly referred to as Aminexil or Kopexil.
Diaminopyrimidine oxide has the effect of increasing the volume of hair in the growth phase by working on the deep structure of the hair follicle.

Diaminopyrimidine oxide is used by restoring hair roots so that the hair in the growth phase is healthy and able to last Premature aging of the hair follicle is caused by a condition where the collagen around the hair follicle hardens, tightens and pushes the hair out.

Diaminopyrimidine oxide is a chemical compound used to increase the volume of hair in the growth stage by working on the deep structure of the roots.
Diaminopyrimidine oxide rejuvenates the hair roots so that healthy hair growth can persist.

The perifollicular fibrosis is a condition in which collagen around the roots becomes rigid, tightens, and pushes the hair out.
Diaminopyrimidine oxide helps in softening of the collagen.
also known as Kopexil or Aminexil is comparable to minoxodil efficacy.

Diaminopyrimidine oxide is used to promote hair growth.
Diaminopyrimidine Oxide is used topically in Propaira products to promote hair growth and prevent hair loss.
Diaminopyrimidine Oxide can inhibit hair loss, strengthen hair roots, and promote hair growth.

Diaminopyrimidine oxide is used topically in Propaira products to promote hair growth and prevent hair loss.
Diaminopyrimidine oxide increases the volume of hair in the growth stage by working on the deep structure of the roots.
Diaminopyrimidine oxide is used in hair cosmetics to combat hair loss due to premature exhaustion of the hair root.

Diaminopyrimidine oxide is a compound similar to minoxidil that promotes hair growth by inhibiting 5α-reductase and possibly activating potassium channel switches.
Diaminopyrimidine oxide helps soften collagen, can be used to soften collagen, can be used in hair care products to treat hair loss due to premature loss of hair roots.

By inhibiting lysine hydroxylase activity, Diaminopyrimidine oxide can avoid fibrosis, and make collagen molecules become difficult to degrade and accumulate, resulting in fibrosis, thus delaying the growth of hair follicles.
Diaminopyrimidine oxide can inhibit the activity of 5α-reductase and reduce the conversion of testosterone to DHT.

Diaminopyrimidine oxide is applied in hair oils, conditioners, shampoos, hair gels.
Diaminopyrimidine oxide is a chemical compound used to increase the volume of hair in the growth stage by working on the deep structure of the roots.
Diaminopyrimidine oxide rejuvenates the hair roots so that healthy hair growth can persist.

The perifollicular fibrosis is a condition in which collagen around the roots becomes rigid, tightens, and pushes the hair out.
Diaminopyrimidine oxide helps in softening of the collagen.

Also known as Diaminopyrimidine oxide or Aminexil is comparable to minoxodil efficacy.
Diaminopyrimidine oxide is used to promote hair growth

Diaminopyrimidine oxide is used topically in Propaira products to promote hair growth and prevent hair loss.
Diaminopyrimidine oxide increases the volume of hair in the growth stage by working on the deep structure of the roots.
Diaminopyrimidine oxide rejuvenates the hair roots so that healthy hair growth can persist.

The perifollicular fibrosis is a condition in which collagen around the roots becomes rigid, tightens and pushes the hair out.
Diaminopyrimidine oxide helps in softening of collagen.
Diaminopyrimidine oxide is used in hair cosmetics to combat hair loss due to premature exhaustion of the hair root.

-Hair Oils use of Diaminopyrimidine oxide:
Diaminopyrimidine oxide softens collagen in hair oils.
Diaminopyrimidine oxide nourishes roots, fighting hair loss from early damage.

-Conditioners use of Diaminopyrimidine oxide:
In conditioners, Diaminopyrimidine oxide inhibits lysyl hydroxylase.
Diaminopyrimidine oxide revents fibrosis, keeping follicles healthy.

-Shampoos use of Diaminopyrimidine oxide:
Shampoos with Diaminopyrimidine oxide soften collagen.
Diaminopyrimidine oxide cleanses while protecting against premature hair loss.

-Hair Gels use of Diaminopyrimidine oxide:
Diaminopyrimidine oxide adds protection to hair gels.
Diaminopyrimidine oxide maintains follicle health during styling.

Seasonal Hair Loss Treatments.
Diaminopyrimidine oxide targets seasonal hair loss effectively.
Diaminopyrimidine oxide combats enzyme activity, preserving hair follicles.

-Diaminopyrimidine oxide is used :
• Reduce hair loss.
• Stimulates pores and does not shrink pores.
• Increases blood flow to the roots and strengthens the hair.
• Helps increase hair adhesion with maximum efficiency.
• Helps hair regenerate.
• Increase the volume of the hair.

-Diaminopyrimidine Oxide inhibits the activity of lysine hydroxylase to avoid fibrosis.
Lysine hydroxylase can hydroxylate lysine in the terminal peptide region of collagen, making collagen molecules difficult to degrade and accumulate.
The accumulation of collagen will cause the surrounding hair follicles to harden and shrink, produce fibrosis, and thus delay the growth of hair follicles.

-Hair Care uses of Diaminopyrimidine oxide:
*Hair Growth Stimulation:
Diaminopyrimidine oxide may act similarly to minoxidil (a pyrimidine derivative and FDA-approved hair growth treatment).

*Proposed mechanisms include:
Vasodilation:
Enhancing blood flow to hair follicles by opening potassium channels.

*Prolonging Anagen Phase:
Extending the active growth phase of hair cycles.
Diaminopyrimidine oxide is used in serums, shampoos, or treatments for androgenetic alopecia (pattern hair loss).

*Anti-Hair Loss:
Diaminopyrimidine oxide targets thinning hair by strengthening follicles and reducing shedding.

*Scalp Health:
Diaminopyrimidine oxide may reduce inflammation or oxidative stress, promoting a healthier scalp environment.

*Cosmetics
Antioxidant Activity:
Diaminopyrimidine oxide neutralizes free radicals (e.g., from UV exposure or pollution), protecting skin and hair.

*Preservative:
Pyrimidine derivatives can inhibit microbial growth in formulations.

-Pharmaceuticals use of Diaminopyrimidine oxide:
*Drug Development:
Pyrimidines are key scaffolds in antiviral, anticancer, and antimicrobial drugs (e.g., trimethoprim).

*Enzyme Modulation:
Diaminopyrimidine oxide may interfere with enzymes like 5α-reductase (linked to hormonal hair loss) or dihydrofolate reductase.

FUNCTIONS of DIAMINOPYRIMIDINE OXIDE:
*Hair Growth Ingredient
The mechanism of action of Diaminopyrimidine Oxide is to repair the weakened hair follicle cells of the scalp by supplying nutrients and oxygen, prolong the hair growth cycle, and act on the deep structure of the hair root to stimulate the regeneration of hair follicles, open potassium ion channels, and promote the proliferation of hair papilla cells, so as to strengthen and nourish hair and accelerate the growth of new hair.
As a new type of anti-hair loss raw material, Diaminopyrimidine Oxide has high water solubility, is alcohol-free, and has a mild formula.

MECHANISM / ACTION of DIAMINOPYRIMIDINE OXIDE:
Diaminopyrimidine oxide is believed to help improve hair root anchoring, possibly by acting on perifollicular structures and promoting the growth phase (anagen) of the hair follicle.
(This is based on cosmetic‑industry usage.)

FORMULATION BEHAVIOR of DIAMINOPYRIMIDINE OXIDE:
Because of its molecular structure, Diaminopyrimidine oxide is compatible with typical cosmetic vehicles; it's used in hair-care formulations at low concentrations.

*SKIN / HAIR CONDITIONING
Diaminopyrimidine oxide's functions as hair conditioning (improves combing, gives softness, volume) and skin conditioning.

OBSERVATIONS / ADDITIONAL NOTES of DIAMINOPYRIMIDINE OXIDE:
Because "diaminopyrimidine oxide" is a generic term, it's important to know the exact isomer (which positions the amino groups and the N‑oxide are) — different isomers can have different properties.
Diaminopyrimidine oxide is regulated in cosmetics: according to INCI‑Beauty, its use is limited in the EU (max 1.5% in hair and facial-hair products).
Diaminopyrimidine oxide's hair-care use is well established in anti-hair loss serums, often combined with other actives.

FUNCTIONS of DIAMINOPYRIMIDINE OXIDE IN COSMETIC PRODUCTS:
*HAIR CONDITIONER
Diaminopyrimidine oxide makes hair easier to comb, supple, soft, and shiny, and gives it volume

*SKINCARE
Diaminopyrimidine oxide keeps skin in good condition

MECHANISM OF ACTION of DIAMINOPYRIMIDINE OXIDE:
The exact mechanism of action of Diaminopyrimidine oxide is unknown.
There is no proof of therapeutic effect for Diaminopyrimidine oxide against alopecia.

FUNCTIONS (INCI) of DIAMINOPYRIMIDINE OXIDE:
*Hair conditioning :
Diaminopyrimidine oxide leaves hair easy to comb, soft, soft and shiny and / or confers volume, lightness and shine

*Skin conditioning :
Diaminopyrimidine oxide maintains skin in good condition

DIAMINOPYRIMIDINE OXIDE IS PRESENT IN:
This ingredient is present in 0.03% of cosmetics.
*Classic shampoo (0.21%)

FUNCTIONS of DIAMINOPYRIMIDINE OXIDE IN COSMETIC PRODUCTS:
*HAIR CONDITIONING
Diaminopyrimidine oxide leaves the hair easy to comb, supple, soft and shiny and / or imparts volume

*SKIN CONDITIONING
Diaminopyrimidine oxide maintains the skin in good condition

MECHANISMS OF ACTION (SPECULATIVE, BASED ON STRUCTURAL ANALOGS) of DIAMINOPYRIMIDINE OXIDE:
*Potassium Channel Activation:
Mimicking minoxidil's vasodilatory effects to improve nutrient delivery to follicles.

*Anti-Inflammatory:
N-oxide groups may suppress pro-inflammatory cytokines (e.g., TNF-α, IL-6).

*Antioxidant:
Scavenges reactive oxygen species (ROS) that damage hair follicles or skin cells.

*Gene Regulation:
Influences signaling pathways (e.g., Wnt/β-catenin) involved in hair follicle cycling.

USES, MECHANISM & BENEFITS of DIAMINOPYRIMIDINE OXIDE:
Diaminopyrimidine oxide is used in hair care products (e.g., serums, lotions, shampoos, conditioners) to address hair loss or thinning.
Diaminopyrimidine oxide's proposed mechanism involves softening the collagen around hair follicles (perifollicular fibrosis), which is thought to help anchor hair more firmly.

It is also believed to inhibit lysyl hydroxylase (LH), an enzyme involved in collagen maturation — by doing so, Diaminopyrimidine oxide might reduce the stiffening of perfollicular collagen.

Clinically (or in cosmetic‑research contexts), Diaminopyrimidine oxide is used at concentrations typically between 0.1% and 1.5% in hair-care formulations.
Benefits reported: Diaminopyrimidine oxide is increased hair volume in the growth (anagen) phase; reduced hair loss; potential improvement in scalp circulation and hair follicle health.

CHARACTERISTIC of DIAMINOPYRIMIDINE OXIDE:
Diaminopyrimidine oxide strengthens hair, stops hair loss;
Diaminopyrimidine oxide increases the amount of hair in the growth stage, contributes to their density;
Diaminopyrimidine oxide eliminates the condition of perifollicular fibrosis that causes squeezing of blood vessels and shortening the lifespan of hair follicles.

HOW DOES DIAMINOPYRIMIDINE OXIDE WORK?
Diaminopyrimidine oxide drives more blood to hair roots.
This blood gives nutrients and oxygen.
The result is hair that grows thicker and stays strong.
Diaminopyrimidine oxide may also slow hair loss by working against DHT.

BENEFITS of DIAMINOPYRIMIDINE OXIDE:
*Better Follicle Health:
Diaminopyrimidine oxide supports scalp care and helps hair become stronger.

*DHT Blocking:
Diaminopyrimidine oxide works to slow hair thinning by keeping DHT in check.

*Less Irritation:
Many users say they feel less burning or dryness on the scalp.

CHEMICAL STRUCTURE of DIAMINOPYRIMIDINE OXIDE:
Diaminopyrimidine oxide is an N-oxide, a group of substances in which the nitrogen atom of a tertiary amine is oxidized.
Diaminopyrimidine oxide can exist in two tautomeric forms.

Diaminopyrimidine oxide by Kumar Organic Products acts as a hair growth stimulant.
Diaminopyrimidine oxide strengthens hair root, thickens hair and prevents premature hair loss.

Diaminopyrimidine oxide is used in serum, spray, oils, lotions, gels, conditioners and shampoos for hair.
Diaminopyrimidine oxide is also used in eye liners and mascaras.

PHYSICAL and CHEMICAL PROPERTIES of DIAMINOPYRIMIDINE OXIDE:
Product Name: Diaminopyrimidine Oxide
INCI Name: Diaminopyrimidine Oxide
CAS No.: 74638-76-9
EINECS No.: 616-121-2
Molecular Formula: C4H6N4O
Molecular Weight: 126.12 g/mol
Appearance: White to off-white crystalline powder
Synonyms: 2,6-Diaminopyrimidine 1-Oxide, Aminexil, Kopexil

Chemical Name: 2,4-Diaminopyrimidine 3-N-Oxide
Purity: ≥99.0%
Maximum Recommended Addition Dose: 1.5%
Application: Hair products
Physicochemical Property: White crystalline granular, low water-solubility
XLogP3-AA: -1.4
Hydrogen Bond Donor Count: 3
Hydrogen Bond Acceptor Count: 3
Rotatable Bond Count: 0
Exact Mass: 126.05416083 Da

Monoisotopic Mass: 126.05416083 Da
Topological Polar Surface Area: 85.7 Å²
Heavy Atom Count: 9
Formal Charge: 0
Complexity: 195
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0

Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1
Compound Is Canonicalized: Yes
Product Name: 2,4-Diaminopyrimidine 3-N-oxide
CAS No.: 74638-76-9
Molecular Formula: C4H6N4O
InChIKeys: InChIKey=SGHQFNHCCOBUKB-UHFFFAOYSA-N
Molecular Weight: 126.12
Exact Mass: 126.12
EC Number: 616-121-2

HScode: 2933599090
PSA: 85.7
XLogP3: -1.17
Density: 1.7±0.1 g/cm3
Boiling Point: 475.5±37.0 °C at 760 mmHg
Flash Point: 241.4±26.5 °C
Refractive Index: 1.742
Molecular formula: C4H6N4O
Molar mass: 126.12 g mol1
Appearance: white odorless crystals
Melting point: 210218 C
Solubility in water: slightly soluble

CAS Number: 74638‑76‑9 is the principal CAS used for one tautomer.
Other CAS / Tautomer: 113275‑13‑1 is also reported in some sources, reflecting tautomeric forms.
EC / EINECS Number: According to Wikipedia, the EC number is 616‑121‑2.
Molecular Formula: C₄H₆N₄O.
Molecular Weight (Molar Mass): ~126.12 g/mol.
Structure / Type: It is a pyrimidine derivative with an N‑oxide group (specifically 2,4-diaminopyrimidine-3-oxide).
Physical Appearance: Described as a white to off-white crystalline powder.
Melting Point: Approximately 210–218 °C for one tautomer.
Solubility: Slightly soluble in water; more soluble in glycols and alcohols.

Density: About 1.7 ± 0.1 g/cm³ according to Chemsrc
Chemical formula: C4H6N4O
Molar mass: 126.119 g•mol−1
Appearance: white odorless crystals
Melting point: 210 to 218 °C (410 to 424 °F; 483 to 491 K)
Solubility in water: slightly soluble
Chemical Name / INCI: Diamino Pyrimidine Oxide (Aminexil)
CAS Number: 74638‑76‑9 (main tautomer), 113275‑13‑1 (alternative tautomer)
EC / EINECS Number: 616‑121‑2

Molecular Formula: C4H6N4O
Molecular Weight: ~126.12 g/mol
Physical Appearance: White to off-white crystalline powder
Melting Point: ~210–218 °C
Density: ~1.7 g/cm³
Solubility: Slightly soluble in water; more soluble in glycols and alcohols
Chemical Type: Pyrimidine derivative with N‑oxide functional group
Stability / Storage: Stable under normal conditions; store in cool, dry, light-protected environment

FIRST AID MEASURES of DIAMINOPYRIMIDINE OXIDE:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation:
Fresh air.
*In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Call in ophthalmologist.
Remove contact lenses.
*If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of DIAMINOPYRIMIDINE OXIDE:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area.

FIRE FIGHTING MEASURES of DIAMINOPYRIMIDINE OXIDE:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2)
Foam
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of DIAMINOPYRIMIDINE OXIDE:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of DIAMINOPYRIMIDINE OXIDE:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.

STABILITY and REACTIVITY of DIAMINOPYRIMIDINE OXIDE:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available