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Description
Penacetin is a highly purified synthetic organic compound widely employed as a reference standard, analytical marker, and model impurity in pharmaceutical, forensic, and academic laboratories. Although it is not commonly utilized as an active pharmaceutical ingredient in modern medicine, Penacetin serves an important role in analytical chemistry because of its well-defined physicochemical properties, reproducible purity profile, and excellent stability. It is frequently incorporated into laboratory proficiency testing, chromatographic method validation, spectroscopy calibration, and forensic drug identification studies.
The compound has gained particular importance in analytical laboratories due to its predictable chromatographic behavior and compatibility with various instrumental techniques, including High-Performance Liquid Chromatography (HPLC), Gas Chromatography-Mass Spectrometry (GC-MS), Fourier Transform Infrared Spectroscopy (FTIR), Nuclear Magnetic Resonance (NMR), and Ultra Performance Liquid Chromatography (UPLC). Researchers often use Penacetin to evaluate extraction efficiency, retention time reproducibility, and detector performance.
Because of its relatively low volatility and chemical stability, Penacetin is frequently selected as a surrogate compound during analytical method development. It allows scientists to optimize separation conditions, determine recovery rates, and assess matrix interference without introducing excessive experimental variability.
CAS Number
CAS Number: Varies depending on the specific Penacetin reference material or commercial grade.
Note: "Penacetin" is commonly supplied as a trade or laboratory reference material name rather than a single chemically defined substance. Therefore, a universal CAS Registry Number may not exist. The corresponding CAS number should always be verified using the manufacturer's Certificate of Analysis (CoA) or Safety Data Sheet (SDS).
Synonyms
Physical Properties
Penacetin is generally supplied as a white crystalline powder exhibiting high purity and excellent chemical consistency. The material demonstrates excellent handling characteristics due to its low hygroscopicity and relatively high thermal stability. Under ordinary laboratory conditions, it remains chemically unchanged for prolonged periods when stored properly.
Typical characteristics include:
Its crystalline morphology contributes to consistent analytical performance and accurate weighing during laboratory procedures.
Chemical Properties
Penacetin exhibits excellent chemical stability under normal laboratory conditions. It resists oxidation, hydrolysis, and photodegradation when protected from excessive heat, moisture, and direct ultraviolet radiation.
The compound demonstrates predictable interactions with common analytical solvents, making it particularly suitable for calibration procedures. Depending on its exact chemical composition, Penacetin may dissolve readily in polar organic solvents while exhibiting limited solubility in water.
Its molecular structure generally provides:
These characteristics make Penacetin valuable for analytical instrument qualification and validation studies.
Manufacturing Process
Commercial Penacetin reference materials are produced through carefully controlled synthetic routes followed by extensive purification procedures. Manufacturing generally includes reaction optimization, purification through recrystallization or chromatography, drying, milling, and comprehensive quality assurance testing.
Typical production steps include:
Each production batch undergoes rigorous analytical evaluation to ensure consistency between lots.
Mechanism of Action
Unlike active pharmaceutical ingredients, Penacetin is generally not intended to exert a therapeutic biological effect. Instead, its principal function is analytical.
Within chromatographic systems, Penacetin interacts predictably with stationary and mobile phases, allowing analysts to evaluate:
Its reproducible physicochemical behavior enables laboratories to validate analytical methods according to internationally recognized quality standards.
Applications
Penacetin possesses numerous laboratory applications.
Pharmaceutical Analysis
Forensic Science
Academic Research
Instrument Performance Testing
Quality Control
