Entecavir
C12H15N5O3·H2O
295.29
6H-Purin-6-one, 2-amino-1,9-dihydro-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-, monohydrate;
9-[(1S,3R,4S)-4-Hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]guanine monohydrate
[209216-23-9] Anhydrous 277.28
6H-Purin-6-one, 2-amino-1,9-dihydro-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-, monohydrate;
9-[(1S,3R,4S)-4-Hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]guanine monohydrate
[209216-23-9] Anhydrous 277.28
DEFINITION
Entecavir is a monohydrate and contains NLT 98% and NMT 102% of entecavir (C12H15N5O3), calculated on the anhydrous basis.
USP REFERENCE STANDARDS FOR PURCHASE
USP Entecavir Monohydrate RSUSP Entecavir Related Compound A RS
USP Entecavir System Suitability Mixture RS