CAS RN: 520-45-6 
EINECS No.: 208-293-9 

Molecular formula: C8H8O4 
Molecular weight: 168.15 
Appearance: white crystalline powder
Purity: ≥99% 
Melting point: ≥109.℃ 
Loss on dry: ≤0.5% 
Use: Used as a preservative, organic synthesis intermediate

CAS NO:31778-10-6

EC NO:250-800-0

Molecular Formula:C₂₉H₂₅N₅O₅

Molecular Weight:523.5393

Synonyms:12514;C.I.PigmentRed208;2-[[3-[-2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-hydroxy-1-naphthalenyl]azo]-Benzoic acid,butyl esterbutyl 2-[(2Z)-2-{2-oxo-3-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]naphthalen-1(2H)-ylidene}hydrazinyl]benzoate;butyl 2-[[2-hydroxy-3-[(2-oxo-1,3-dihydrobenzimidazol-5-yl)carbamoyl]-1-naphthyl]azo]benzoate;Butyl 2-[[3-[[(2,3-Dihydro-2-Oxo-1H-Benzimidazol-5-Yl)Amino]Carbonyl]-2-Hydroxy-1-Naphthyl]Azo]Benzoate;

Molecular Structure: