Ethyl 5-amino-4H-[1,2,4]triazole-3-carboxylate

Also known as: Ethyl 5-amino-1H-1,2,4-triazole-3-carboxylate, Ethyl 5-amino-4H-1,2,4-triazole-3-carboxylate, Ethyl 5-amino-2H-1,2,4-triazole-3-carboxylate, Ethyl 3-amino-1H-1,2,4-triazole-5-carboxylate, Ethyl 5-amino-1,2,4-triazole-3-carboxylate, 5-Amino-1H-[1,2,4]triazole-3-carboxylic acid ethyl ester, 5-Amino-4H-[1,2,4]triazole-3-carboxylic acid ethyl ester, 3-Carbethoxy-5-amino-1,2,4-triazole, NSC 148474, 1H-1,2,4-Triazole-3-carboxylic acid, 5-amino-, ethyl ester, 4H-1,2,4-Triazole-3-carboxylic acid, 5-amino-, ethyl ester, 1H-1,2,4-Triazole-5-carboxylic acid, 3-amino-, ethyl ester

Ethyl 5-amino-4H-[1,2,4]triazole-3-carboxylate (CAS 63666-11-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H8N4O2 and a molecular weight of 156.143 g/mol. Key properties include a melting point of 242-243ºC, a boiling point of 373.9±25.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 179.9±23.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

63666-11-5

Jingsj CID

J-903823-7

Molecular Formula

C₅H₈N₄O₂

Molecular Weight

156.143 g/mol

Category

Organic Acids

Last updated

8/21/2026