ChemicalBook >> CAS DataBase List >>Desmethyl sildenafil
Desmethyl sildenafil
- CAS No.
- 139755-82-1
- Chemical Name:
- Desmethyl sildenafil
- Synonyms
- Sildenafil N-DesMethyl Metabolite;UK 103320;Sildenafil Q;N-demethylsildenafil;N-DESMETHYL SILDEFIL;Sildenafil-desmethyl;Desmethyl sildenafil;Sildenafil Impurity Q;Sildenafil N-desmethyl;Sildenafil impurities 7
- CBNumber:
- CB6282710
- Molecular Formula:
- C21H28N6O4S
- Molecular Weight:
- 460.55
- MDL Number:
- MFCD00908398
- MOL File:
- 139755-82-1.mol
- MSDS File:
- SDS
- TDS File:
- TDS
Last updated:2026-09-12 18:54:10
| Melting point | 158-160°C |
|---|---|
| Density | 1.44±0.1 g/cm3(Predicted) |
| storage temp. | Keep in dark place,Sealed in dry,2-8°C |
| solubility | DMF: 5 mg/ml; DMSO: 10 mg/ml; DMSO:PBS (pH 7.2)(1:5): 0.15 mg/ml |
| form | A crystalline solid |
| pka | 10.05±0.20(Predicted) |
| color | White to off-white |
| Stability | Moisture Sensitive |
| FDA UNII | L6WO34R9YG |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302-H315-H319-H335 | |||||||||
| Precautionary statements | P261-P305+P351+P338 | |||||||||
| HS Code | 9999999999 | |||||||||
| NFPA 704 |
|
Desmethyl sildenafil price More Price(47)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Cayman Chemical | 18208 | N-desmethyl Sildenafil ≥98% | 139755-82-1 | 1mg | $32 | 2026-04-30 | Buy |
| Cayman Chemical | 18208 | N-desmethyl Sildenafil ≥98% | 139755-82-1 | 5mg | $104 | 2026-04-30 | Buy |
| Cayman Chemical | 18208 | N-desmethyl Sildenafil ≥98% | 139755-82-1 | 10mg | $192 | 2026-04-30 | Buy |
| Cayman Chemical | 18208 | N-desmethyl Sildenafil ≥98% | 139755-82-1 | 50mg | $638 | 2026-04-30 | Buy |
| Usbiological | D3220-90H | N-Desmethyl Sildenafil ~90% | 139755-82-1 | 5mg | $460 | 2026-06-03 | Buy |
Desmethyl sildenafil Preparation Products And Raw materials
Raw materials
Preparation Products
Global Suppliers ( 140)
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Chemsky（shanghai）International Co.,Ltd. | 021-50135380 | shchemsky@sina.com | China | 32273 | 50 |
| Daicel Chiral Technologies (China)CO.,LTD | 021-50460086-9 15921403865 | han_yajun@dctc.daicel.com | China | 7909 | 65 |
| S.Z. PhyStandard Bio-Tech. Co., Ltd. | 0755-4000505016 13380397412 | 3001272453@qq.com | China | 5000 | 50 |
| Clearsynth Labs Limited | +91-22-26355700 | info@clearsynth.com | India | 9656 | 58 |
| Cato Research Chemicals Inc. | 020-81960175 | min.he@cato-chem.com | China | 1949 | 55 |
| Bide Pharmatech Ltd. | 400-164-7117 18317119277 | product02@bidepharm.com | China | 40000 | 60 |
| Quality Control Solutions Ltd. | 0755-66853366 13670046396 | orders@qcsrm.com | China | 18188 | 56 |
| Wuxi Zhongkun Biochemical Technology Co., Ltd. | 0510-85629785 18013409632; | sales@reading-chemicals.com | China | 15165 | 58 |
| Shandong Boluoda Biological Technology Co., Ltd. | 0531-68651502 | 2310993908@qq.com | China | 3228 | 58 |
View Latest Price from Desmethyl sildenafil manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-07-13 | N-Desmethyl Sildenafil
139755-82-1
|
$30.00-75.00 | 99.68% | 10g | TargetMol Chemicals Inc. | ||
 |
2025-12-16 | Sildenafil EP Impurity F
139755-82-1
|
10mg | 99%+ HPLC | 1000 | Moxin Chemicals | ||
 |
2022-02-25 | N-Desmethyl Sildenafil
139755-82-1
|
$1.20 | 1KG | 99% | 3tons | Hong Kong Tiansheng New Material Trading Co., Ltd |
-
- N-Desmethyl Sildenafil
139755-82-1
- $30.00-75.00
- 99.68%
- TargetMol Chemicals Inc.
-
- Sildenafil EP Impurity F
139755-82-1
- 99%+ HPLC
- Moxin Chemicals
-
- N-Desmethyl Sildenafil
139755-82-1
- $1.20
- 99%
- Hong Kong Tiansheng New Material Trading Co., Ltd
139755-82-1 (Desmethyl sildenafil) Related Search:
Thiosildenafil
1-Methyl-4-nitro-3-propyl-1H-pyrazole-5-carboxylic acid
4-Amino-1-methyl-3-propyl-5-pyrazolecarboxamide
Sildenafil EP IMpurity D
4-Amino-2-methyl-5-propyl-2H-pyrazole-3-carboxylic acid
Propoxyphenyl Sildenafil
Homo Sildenafil
Sildenafil impurity
Sildenafil DiMer IMpurity
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
Sildenafil N-oxide
1of4
5-[2-Ethoxy-5-(1-piperazinylsulfonyl)phenyl]-1,6-dihydro-1-methyl-3-propyl- 7H-pyrazolo[4,3-d]pyrimidin-7-one
UK 103320
Sildenafil Impurity 5/Sildenafil EP Impurity F/N-Desmethyl Sildenafil/5-[2-Ethoxy-5-(piperazin-1-yl)sulfonylphenyl]-1-methyl-3-propyl-4H-pyrazolo[5,4-e]pyrimidin-7-one
5-(2-ethoxy-5-(piperazin-1-ylsulfonyl)
N-Desmethyl Sildenafil Impurity
Sildenafil Q
Sildenafil Impurity Q
5-[2-Ethoxy-5-(piperazin-1-ylsulfonyl)phenyl]-1
5-[2-Ethoxy-5-(piperazin-1-yl)sulfonylphenyl]-1-methyl-3-propyl-4H-pyrazolo[5,4-e]pyrimidin-7-one
N-Desmethyl Sildenafil Solution, 100ppm
Sildenafil N-DesMethyl IMpurity
Sildenafil N-DesMethyl Metabolite
5-(2-Ethoxy-5-(piperazin-1-ylsulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one
Sildenafil N-desmethyl
5-[2-Ethoxy-5-(1-Piperazinylsulfonyl)Phenyl]-1-Methyl-3-Propyl-1,6-Dihydro-7H-Pyrazolo[4,3-d]Pyrimidin-7-One
Sildenafil N-desmethy impurity
Sildenafil impurities 7
1-[[3-(4,7-Dihydro-1-methyl-7-oxo-3
3-(4,7-Dihydro-1-methyl-7-oxo-3-pro
Sildenafil EP Impurity F (N-Desmethyl Sildenafil)
7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-[2-ethoxy-5-(1-piperazinylsulfonyl)phenyl]-1,6-dihydro-1-methyl-3-propyl-
N-demethylsildenafil
Sildenafil EP Impurity F (Sildenafil N-Desmethyl Metabolite)
Sildenafil impurity A(Sildenafil N-Desmethyl Metabolite)
N-Desmethyl sildenafilQ: What is
N-Desmethyl sildenafil Q: What is the CAS Number of
N-Desmethyl sildenafil Q: What is the storage condition of
N-Desmethyl sildenafil Q: What are the applications of
N-Desmethyl sildenafil
5-[2-Ethoxy-5-(piperazin-1-ylsulfonyl)phenyl]-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
Sildenafil Citrate Impurity F (EP)
Sildenafil Citrate EP Impurity F (EP)
N-DESMETHYL SILDEFIL
5-(2-ethoxy-5-(piperazin-1-ylsulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(4H)-one
Sildenafil-desmethyl
5-(2-ethoxy-5-(piperazin-1-ylsulfonyl)phenyl)-1-methyl-3-propyl-1,4-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
N-Desmethyl Sildenafil, 10 mM in DMSO
5-[2-Ethoxy-5-(1-piperazinylsulfonyl)phenyl]-1-methyl-3-propylpyrazolo[4,3-d]pyrimidin-7(6H)-one
N-Desmethyl Sildenafil HCl
1-[[3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]piperazine (Desmethylsildenafil)
Desmethylsildenafil (1-[[3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]piperazine) 1.0 mg/ml in Methanol
Desmethylsildenafil (1-[[3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]piperazine)
3-d]pyrimidin-7(6H)-one
5-(2-Ethoxy-5-(piperazin-1-ylsulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4
Des-Me-SLD: Pipazine, 1-[[3-(4,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl
Sildenafil citrate EP impurity F
1-[[3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl
Piperazine N-desmethyl Sildenafil
Desmethyl sildenafil
139755-82-1
C21H28N6O4S
Intermediates & Fine Chemicals
Metabolites & Impurities
Various Metabolites and Impurities
Pfizer compounds
Pharmaceuticals
