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Sildenafil impurity

Product Name
Sildenafil impurity
CAS No.
1971915-89-5
Chemical Name
Sildenafil impurity
Synonyms
Sildenafil-002;SildefilImpurity33;Sildenafil Impurity J;Ethyl 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonate;ethyl 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonate;3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethyl ester Benzenesulfonic acid;Benzenesulfonic acid, 3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-, ethyl ester;Sildenafil impurity 9/ 3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethyl ester Benzenesulfonic acid
CBNumber
CB54665426
Molecular Formula
C19H24N4O5S
Formula Weight
420.48
MOL File
1971915-89-5.mol
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Sildenafil impurity Property

Melting point:
149 - 152°C
Boiling point:
624.0±65.0 °C(Predicted)
Density 
1.37±0.1 g/cm3(Predicted)
storage temp. 
Hygroscopic, -20°C Freezer, Under inert atmosphere
solubility 
Chloroform (Slightly), Methanol (Slightly)
form 
Solid
pka
0.36±0.20(Predicted)
color 
White to Off-White
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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

TRC
Product number
D414610
Product name
3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethylesterBenzenesulfonicacid
Packaging
250mg
Price
$965
Updated
2021/12/16
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Sildenafil impurity Chemical Properties,Usage,Production

Uses

3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethyl ester Benzenesulfonic acid is used in the preparation of sildenafil impurity for pharmaceutical quality control by esterification.

Sildenafil impurity Preparation Products And Raw materials

Raw materials

Preparation Products

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Sildenafil impurity Suppliers

China 33 India 1 United States 1 Global 35
ChemStrong Scientific Co.,Ltd
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0755-0755-66853366 13670046396
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0755-28363542
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sales@chem-strong.com
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China
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Shanghai Kewel Chemical Co., Ltd.
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021-64609169 18901607656
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021-64609160
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greensnown@163.com
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China
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Nanjing XiZe Biotechnology CO., Ltd.
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025-58362220 15250997978
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025-58362220
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China
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Lianyungang TengFa Biological Technology Co. Ltd
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0518-85475186 18705131893
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0518-85475186
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wang666xt@163.com
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China
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Shanghai Xiang Xin Industrial Co., Ltd.
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021-50211651 13651607026
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+86-21-50211651
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sales@xxgmpharm.com
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China
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Shijiazhuang yaoBo Pharmaceutical Co., Ltd.
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15633056635
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2880679888@qq.com
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China
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Chengdu Saint - Kay Biotechnology Co., Ltd.
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028-85157043 15882256948
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China
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Shandong Chengchuang Blue Sea Pharmaceutical Technology Co., Ltd.
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0531-58897130 15508676053
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drug_impurity@sdcclh.com
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China
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1741
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Shenzhen Botel Biotechnology Co. Ltd.
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0755-22202135 13316968096
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1979313431@qq.com
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Career Henan Chemica Co
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+86-0371-86658258 15093356674;
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0371-86658258
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1971915-89-5, Sildenafil impurityRelated Search:

4-Amino-2-methyl-5-propyl-2H-pyrazole-3-carboxylic acid 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-(5-chloro-2-ethoxyphenyl)-1,6-dihydro-1-methyl-3-propyl- Sildenafil EP IMpurity D Propoxyphenyl Sildenafil DESMETHYL SILDENAFIL Homo Sildenafil Sildenafil DiMer IMpurity SILDENAFIL N-OXIDE 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,6-dihydro-5-(2-hydroxyphenyl)-1-methyl-3-propyl- 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-4H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonamide 1-Methyl-4-nitro-3-propyl-(1H)-pyrazole-5-carboxamide 5-[2-Ethoxy-5-[(4-Methyl-4-oxido-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-Methyl-3-(2-Methylpropyl)-7H-pyrazolo[4,3-d]pyriMidin-7-one Desethyl Sildenafil 1-METHYL-4-NITRO-3-PROPYL-1H-PYRAZOLE-5-CARBOXYLIC ACID 1H-PYRAZOLE-5-CARBOXAMIDE, 4-[[2-ETHOXY-5-[(4-METHYL-1-PIPERAZINYL)SULFONYL]BENZOYL]AMINO]-1-METHYL-3-PROPYL- 1-Piperazinesulfonicacid,4-methyl-(9CI) 2-ETHOXY-5-[(4-METHYLPIPERAZIN-1-YL)SULFONYL]BENZOIC ACID 5-CHLOROSULFONYL-2-ETHOXYBENZOIC ACID

  • Sildenafil-002
  • Sildenafil Impurity J
  • Sildenafil impurity 9/ 3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethyl ester Benzenesulfonic acid
  • ethyl 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonate
  • 3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethyl ester Benzenesulfonic acid
  • SildefilImpurity33
  • Ethyl 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonate
  • Benzenesulfonic acid, 3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-, ethyl ester
  • 1971915-89-5