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Entecavir

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Origem: China

Cas No: 142217-69-4

Especificação: 99%Min

Quantidade de ordem min: 1 /kg

Capacidade de fornecimento: 50 mt/month

Tempo de espera: 7 dias para OEM, 3 dias para produtos prontos

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Especificação de produtos
Descrição do produto

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CAS No.: 142217-69-4 Formula: C12H15N5O3 Molecular Weight: 277.27900

Description

Entecavir INN, abbreviated ETV, is an oral antiviral drug used in the treatment of hepatitis B virus (HBV) infection. Entecavir is a reverse transcriptase inhibitor. It prevents the hepatitis B virus from multiplying and reduces the amount of virus in the body. More specifically, it is a deoxyguanosine analogue belonging to a class of carbocyclic nucleosides, that inhibits reverse transcription, DNA replication and transcription in the viral replication process.

Basic Info

Chemical Name	Entecavir
Synonyms	2-amino-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-3H-purin-6-one; Baraclude; UNII-NNU2O4609D; Entecavir(anhydrous);
CAS No.	142217-69-4
Molecular Formula	C12H15N5O3
Molecular Weight	277.27900
PSA	130.05000
LogP	-0.24660

Properties

Appearance & Physical State	white to off-white/yellow crystalline powder
Density	1.81g/cm3
Boiling Point	734.2ºC at 760 mmHg
Melting Point	249-252ºC
Flash Point	397.9ºC
Refractive Index	1.837

Safety Info

HS Code	2933990090

Synthesis Route

6-chloroentecavir→Entecavir
tert-butyl (6-iodo-9-((4aR,6S,7aS)-2-methyl-5-methylenehexahydrocyclopenta[d][1,3]dioxin-6-yl)-9H-purin-2-yl)carbamate→Entecavir
6-(benzyloxy)-9-((4aR,6S,7aS)-5-methylene-2-phenylhexahydrocyclopenta[d][1,3]dioxin-6-yl)-N-(trimethylsilyl)-9H-purin-2-amine→Entecavir

Precursor

9-[(1S,3R,4S)-4-tert-butyldimethylsilyloxy-3-(tert-butyldimethylsilyloxymethyl)-2-methylene-cyclopentyl]-6-chloro-9H-purine-2-carbamic acid tert-butyl ester
6-(benzyloxy)-9-((4aR,6S,7aS)-5-methylene-2-phenylhexahydrocyclopenta[d][1,3]dioxin-6-yl)-N-(trimethylsilyl)-9H-purin-2-amine
6-chloroentecavir
tert-butyl (6-iodo-9-((4aR,6S,7aS)-2-methyl-5-methylenehexahydrocyclopenta[d][1,3]dioxin-6-yl)-9H-purin-2-yl)carbamate

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