Chemical name:3-Pyridinesulfonamide, N-[[(1-methylethyl)amino]carbonyl]-4-[(3-methylphenyl)amino]-.1-Isopropyl-3-[(4-m-toluidino-3-pyridyl)sulfonyl]urea
Molecular formular:C₁₆H₂₀N₄O₃S
Molecular weight:348.43
CAS:56211-40-6
Molecular structure:

Quality standard:According to USP28、EP5.2

item	USP28 standard	Enterprise standard	EP5.2 standard
Property	White or off white powder or crystal	White or off white powder or crystal	White or off white powder
Relation substance	ImpurityA≤0.5％ ImpurityB≤0.3％ ImpurityC≤0.2％ Other≤0.1％ Impurity≤1.0％	Impurity≤1.0％ Single peak≤0.5％	ImpurityA、C、D≤0.1％ ImpurityB≤0.5％ Other≤0.1％ Impurity≤0.6％
Loss in dry	≤0.8％	≤1.0％	≤0.5％
Remain in burn	≤0.1%	≤0.1%	-
Heavy metal	≤10ppm	≤10ppm	≤10ppm
Sulfuric acid ash	-	-	≤0.1%
Assay	98.0～102.0％	≥98.5%	99.0～101.0％