ChemicalBook > CAS DataBase List > 2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one

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

Product Name
2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one
CAS No.
142217-81-0
Chemical Name
2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one
Synonyms
DIBENZYLOXY GUANINE INTERMEDIATE;2-aMino-1,9-dihydro-9-[(1S,3R,4S)-2-Methylene-4-(benzyloxy)-3-[(benzyloxy)Methyl]cyclopentyl]-6H-Purin-6-one;ETA/ET1/N8;Entecavir-9;Entecavir E8;N-1 Entecavir API;Dibenzyl Entecavir;US-DMF No.: 026257;Entecavir Impurity 4;Entecavir dibenzylated
CBNumber
CB11562443
Molecular Formula
C26H27N5O3
Formula Weight
457.52
MOL File
142217-81-0.mol
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2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one Property

Melting point:
245-247°C (dec.)
Density 
1.34
storage temp. 
Keep in dark place,Inert atmosphere,Room temperature
solubility 
DMSO (Slightly)
form 
Solid
pka
9?+-.0.20(Predicted)
color 
White to Pale Beige
CAS DataBase Reference
142217-81-0(CAS DataBase Reference)
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Safety

HS Code 
29335990
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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

TRC
Product number
D417550
Product name
3’,5’-Di-O-benzylEntecavir
Packaging
1g
Price
$425
Updated
2021/12/16
TRC
Product number
D417550
Product name
3’,5’-Di-O-benzylEntecavir
Packaging
25mg
Price
$155
Updated
2021/12/16
Matrix Scientific
Product number
093988
Product name
2-Amino-9-((1S,3R,4S)-4-(benzyloxy)-3-((benzyloxy)-methyl)-2-methylenecyclopentyl)-1H-purin-6(9H)-one
Purity
95+%
Packaging
1g
Price
$1428
Updated
2021/12/16
AK Scientific
Product number
X6283
Product name
2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one
Packaging
1g
Price
$523
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
NUC0000801
Product name
(1S,3R,4S)-2-AMINO-9-[4-(BENZYLOXY)-3-(BENZYLOXYMETHYL)-2-METHYLIDENE-CYCLOPENTYL]-3H-PURIN-6-ONE
Purity
95.00%
Packaging
25MG
Price
$525
Updated
2021/12/16
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2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one Chemical Properties,Usage,Production

Chemical Properties

White powder

Uses

3’5’Di-O-benzyl Entecavir is an intermediate in the preparation of the hepatitis B antiviral agent, Entecavir (E558900).

Uses

3’,5’-Di-O-benzyl Entecavir is an intermediate in the preparation of the hepatitis B antiviral agent, Entecavir (E558900).

2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one Preparation Products And Raw materials

Raw materials

Preparation Products

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

Canada 1 China 187 India 6 United States 7 USA 1 Global 202
HBCChem, Inc.
Tel
+1-510-219-6317
Fax
+1-650-486-1361
Email
sales@hbcchem.com
Country
United States
ProdList
10648
Advantage
60
Standardpharm Co. Ltd.
Tel
86-714-3992388
Email
overseasales1@yongstandards.com
Country
United States
ProdList
14332
Advantage
58
Cato Research Chemicals Inc.
Tel
020-81215950 4000-868-328
Email
customer@uwalab.com
Country
United States
ProdList
10404
Advantage
58
Alfa Chemistry
Tel
--
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Email
info@Alfa-Chemistry.com
Country
United States
ProdList
6814
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0
Combi-Blocks Inc.
Tel
--
Fax
--
Email
sales@combi-blocks.com
Country
United States
ProdList
6618
Advantage
69
Matrix Scientific
Tel
--
Fax
--
Email
sales@matrixscientific.com
Country
United States
ProdList
6632
Advantage
80
Ivy Fine Chemicals
Tel
--
Fax
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Email
sales@ivychem.com
Country
United States
ProdList
6493
Advantage
58
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View Lastest Price from 2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one manufacturers

Guangzhou Tosun Pharmaceutical Ltd
Product
Entecavir Impurity 4 142217-81-0
Price
US $0.00-0.00/mg
Min. Order
5mg
Purity
95%+
Supply Ability
1000mg
Release date
2025-02-06
Shaanxi Dideu Medichem Co. Ltd
Product
2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one 142217-81-0
Price
US $0.10/KG
Min. Order
1KG
Purity
99.0%
Supply Ability
1000 tons
Release date
2020-04-27
Henan Fengda Chemical Co., Ltd
Product
2-amino-9-((1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl)-1H-purin-6(9H)-one 142217-81-0
Price
US $30.00-0.90/KG
Min. Order
1KG
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2024-04-26

142217-81-0, 2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-oneRelated Search:

Cyclopentyl methyl ether Acetaminophen EC 2.6.1.2 TERT-AMYL METHYL ETHER Methyl salicylate Kresoxim-methyl 4-Methoxybenzylchloride Methyl acetate Tribenuron methyl METSULFURON METHYL (1S,2R,3S,5R)-3-(Phenymethyloxy)-2-(phenylmethoxy)methyl-6-oxabicyclo[3.1.0]hexane Thiophanate-methyl Methyl 6-(Benzyloxy)-9-((1S,3S)-4-(benzyloxy)-3-((benzyloxy)methyl)-2-methylenecyclopentyl)-N-((4-methoxyphenyl)diphenylmethyl)-9H-purin-2-amine Entecavir hydrate 6-(Benzyloxy)-9-[(1S,3R,4S)-2-methylene-4-(phenylmethoxy)-3-[(phenylmethoxy)methyl]cyclopentyl]-9H-purine-2-amine (1S,2S,3S,5S)-5-(2-Amino-6-(benzyloxy)-9H-purin-9-yl)-3-(benzyloxy)-2-(benzyloxymethyl)cyclopentanol 2-AMino-1,9-dihydro-9-[(1S,3R,4S)-4-(hydroxydiMethylsilyl)-3-(hydroxyMethyl)-2-Methylenecyclopentyl]-6H-purin-6-one

  • Entecavir InterMediate VIII IsoMer
  • 2-aMino-1,9-dihydro-9-[(1S,3R,4S)-2-Methylene-4-(benzyloxy)-3-[(benzyloxy)Methyl]cyclopentyl]-6H-Purin-6-one
  • Entecavir InterMediate N-1
  • [1S-(1α,3α,4β)]-2-AMino-1,9-dihydro-9-[2-Methylene-4-(phenylMethoxy)-3-[(phenylMethoxy)Methyl]cyclopentyl]-6H
  • 2-AMino-1,9-dihydro-9-[(1S,3R,4S)-2-Methylene-4-(phenylMethoxy)-3-[(phenylMethoxy)Methyl]cyclopentyl]-6H-purin-6-one
  • Entecavir Impurity 4
  • Dibenzyl Entecavir
  • Dibenzyl Entecavir (3',5'-Di-O-Benzyl Entecavir)
  • 2-amino-9-[(1S,3R,4S)-4-(benzyloxy)-3-[(benzyloxy)methyl]-2-methylidenecyclopentyl]-9H-purin-6-ol
  • ETA/ET1/N8
  • 3',5'-Di-O-benzyl Entecavir
  • 2-AMino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxyMethyl)-2-Methylenecyclopentyl]-6H-purin-6-one (interMediate 7)
  • 2-AMino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxyMethyl)-2-Methylenecyclopentyl]-6H-purin
  • 2-Amino-9-((1S,3R,4S)-4-(benzyloxy)-3-((benzyloxy)-methyl)-2-methylenecyclopentyl)-1H-purin-6(9H)
  • 6H-Purin-6-one,2-amino-1,9-dihydro-9[(1S,3R,4S)-2-methylene-4-(phenylmethoxy)-3-[([phenylmethoxy)methyl]cyclopentyl]-
  • N-1 Entecavir API
  • 2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-p
  • Entecavir dibenzylated
  • 2-Amino-9-((1S,3R,4S)-4-(benzyloxy)-3-((benzyloxy)-methyl)-2-methylenecyclopentyl)-1H-purin-6(
  • (1S,3R,4S)-2-amino-9-[4-(benzyloxy)-3-(benzyloxymethyl)-2-methylidene-cyclopentyl]-3H-purin-6-one
  • 2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one
  • Entecavir-9
  • 2-amino-9-((1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)-2-methylenecyclopentyl)-1H-purin-6(9H)-one
  • Entecavir E8
  • 2-AMINO-9-((1S,3R,4S)-4-(BENZYLOXY)-3-(BENZYLOXYMETHYL)-2-METHYLENECYCLOPHENTYL)-1H-PURIN-6(9H)-ONE
  • 2-aMino-9-((1S,3R,4S)-4-(benzyloxy)-3-(benzyloxyMethyl)-2-Methylenecyclopentyl)-9H-purin-6-ol
  • 2-aMino-9-((1S,3R,4S)-4-(benzyloxy)-3-(benzyloxyMethyl)-2-Methylenecyclopentyl)-1H-[(13)C4]purin-6(9H)-one
  • Entecavir impurity SRR
  • Entecavir Dibenzyl Impurity
  • 2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-Chemicalbook(benzyloxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one
  • DIBENZYLOXY GUANINE INTERMEDIATE
  • 2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxy...
  • US-DMF No.: 026257
  • 2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-(benzyloxy)-3-(benzyloxymethyl)- 2-methylenecyclopentyl]-6H-
  • 2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4- (benzyloxy)-3- (benzyloxymethyl)-2-methylenecyclopentyl]}6H- purin-6-one(Ent-VIII)
  • 2-Amino-1,9-dihydro-9- [(1S, 3R, 4S) -4-benzyloxy-3-benzyloxymethyl-2-methylenecyclopentyl] -6H-purine-6-one
  • Dibenzyl Entecavir (3',5'-Di-O-Benzyl Entecavir)
  • 3’,5’-Di-O-benzyl Entecavir
  • 142217-81-0
  • 142271-81-0
  • 142214-77-4