2-Amino-1,9-dihydro-9-[(1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one

2-氨基-1,9-二氢-9-[(1R,3S,4R)-4-羟基-3-(羟甲基)-2-亚甲基环戊基]-6H-嘌呤-6-酮

Also known as: ent-Entecavir, (1R,3S,4R)-Entecavir, Entecavir impurity 3, Entecavir impurity 4, 2-Amino-9-((1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-1,9-dihydro-6H-purin-6-one, 2-amino-9-[(1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-3H-purin-6-one

2-Amino-1,9-dihydro-9-[(1R,3S,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one (CAS 188399-46-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H15N5O3 and a molecular weight of 277.279 g/mol. It is also known as ent-Entecavir, (1R,3S,4R)-Entecavir and Entecavir impurity 3. Key property: a density of 1.8±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

188399-46-4

Jingsj CID

J-987570-6

Molecular Formula

C₁₂H₁₅N₅O₃

Chinese Name

2-氨基-1,9-二氢-9-[(1R,3S,4R)-4-羟基-3-(羟甲基)-2-亚甲基环戊基]-6H-嘌呤-6-酮

Molecular Weight

277.279 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026