cas no 100-42-5 Vinyl benzene; Stryrene; Cinnamenol; Cinnamol; Cinnamene; Cinnamenol; Ethenylbenzene; Phenethylene; Vinylbenzene; Vinylbenzol; Phenylethene; Stirolo (Italian); Styreen (Dutch); Styren (Czech); Styrol (German); Styrolene; Styron; Styropol; Styropor; Vinylbenzen (Dutch);