CH-223191 25MG. CH-223191, CAS Number: 301326-22-7, Molecular Formula: C19H19N5O, Molecular Weight: 333. 39, Purity: raised to 3 95%, Appearance: Orange solid, Storage: Conditions -20 deg C, Synonym: 1-Methyl-N-[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl-1H-pyrazole-5-carboxamide, Size: 25MG