(E)-4-oxo-4-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)but-2-enoic acid

4-氧代-4-(3-氧代-3,4-二氢-2H-1,4-苯并噁嗪-6-基)-2-丁烯酸

Also known as: 2-Butenoic acid, 4-(3,4-dihydro-3-oxo-2H-1,4-benzoxazin-6-yl)-4-oxo-, 4-Oxo-4-(3-oxo-3,4-dihydro-2H-1,4-benzoxazin-6-yl)-2-butenoic acid, 4-Oxo-4-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)but-2-enoic acid, 4-oxo-4-(3-oxo-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl)-but-2-enoic acid

(E)-4-oxo-4-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)but-2-enoic acid (CAS 26518-87-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H9NO5 and a molecular weight of 247.20400 g/mol. It is also known as 2-Butenoic acid, 4-(3,4-dihydro-3-oxo-2H-1,4-benzoxazin-6-yl)-4-oxo-, 4-Oxo-4-(3-oxo-3,4-dihydro-2H-1,4-benzoxazin-6-yl)-2-butenoic acid and 4-Oxo-4-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)but-2-enoic acid. Key properties include a melting point of 268-269ºC, a boiling point of 558.6ºC at 760mmHg, a density of 1.432g/cm3 and a flash point of 291.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

26518-87-6

Jingsj CID

J-1512581-3

Molecular Formula

C₁₂H₉NO₅

Chinese Name

4-氧代-4-(3-氧代-3,4-二氢-2H-1,4-苯并噁嗪-6-基)-2-丁烯酸

Molecular Weight

247.20400 g/mol

Category

Organic Acids

Last updated

8/21/2026