2-[(4-Nitrophenyl)azo]-3-oxo-N-phenylbutanamide

C.I.颜料黄4

Also known as: Butanamide, 2-[2-(4-nitrophenyl)diazenyl]-3-oxo-N-phenyl-, 2-[(4-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide, 2-[(p-nitrophenyl)azo]acetoacetanilide, Butanamide, 2-(4-nitrophenyl)azo-3-oxo-N-phenyl-, C.I. 11665, CIPIGMENTYELLOW4, Pigment Yellow 4, Hansa Yellow 13G, Irgalite Yellow 5G, Irgalite Yellow 5GL, Fast Yellow 11J, Carnelio Yellow 5G, Eljon Yellow 5G, Kromon Primrose Yellow, Pigment Yellow 5G, Recolite Yellow 5G

2-[(4-Nitrophenyl)azo]-3-oxo-N-phenylbutanamide (CAS 1657-16-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C16H14N4O4 and a molecular weight of 326.30700 g/mol. It is also known as Butanamide, 2-[2-(4-nitrophenyl)diazenyl]-3-oxo-N-phenyl-, 2-[(4-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide and 2-[(p-nitrophenyl)azo]acetoacetanilide. Key properties include a boiling point of 527.6ºC at 760mmHg, a density of 1.32g/cm3 and a flash point of 272.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

1657-16-5

Jingsj CID

J-1519878-9

Molecular Formula

C₁₆H₁₄N₄O₄

Chinese Name

C.I.颜料黄4

Molecular Weight

326.30700 g/mol

Category

Organic Compounds

Last updated

8/21/2026