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;DESMETHYL SILDENAFIL;N-demethylsildenafil;N-DESMETHYL SILDEFIL;Sildenafil-desmethyl;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:2026-07-14 16:49:18
| Product description | Number | Pack Size | Price |
| N-desmethyl Sildenafil ≥98% | 18208 | 1mg | $32 |
| N-desmethyl Sildenafil ≥98% | 18208 | 5mg | $104 |
| N-desmethyl Sildenafil ≥98% | 18208 | 10mg | $192 |
| N-desmethyl Sildenafil ≥98% | 18208 | 50mg | $638 |
| N-Desmethyl Sildenafil ≥98% | 18208 | 1mg | $36 |
| More product size | |||
| 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(62)
| 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 |
| Cayman Chemical | 18208 | N-Desmethyl Sildenafil ≥98% | 139755-82-1 | 1mg | $36 | 2024-03-01 | Buy |
DESMETHYL SILDENAFIL Preparation Products And Raw materials
Raw materials
Preparation Products
Global( 135)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Moxin Chemicals | +86-17320513646 +8617320513646 | anna@molcoo.com | China | 10000 | 58 |
| Standardpharm Co. Ltd. | 86-714-3992388 | overseasales1@yongstandards.com | United States | 14332 | 58 |
| TargetMol Chemicals Inc. | +1-781-999-5354; +17819995354 | marketing@targetmol.com | United States | 32466 | 58 |
| Career Henan Chemica Co | +86-0371-86658258 +8613203830695 | laboratory@coreychem.com | China | 30224 | 58 |
| Hong Kong Tiansheng New Material Trading Co., Ltd | +8617320695765 | zxx@hktiansheng.com | China | 973 | 58 |
| sgtlifesciences pvt ltd | +8617013299288 | dj@sgtlifesciences.com | China | 12373 | 58 |
| HANGZHOU LEAP CHEM CO., LTD. | +86-571-87711850 | market18@leapchem.com | China | 24597 | 58 |
| Zibo Hangyu Biotechnology Development Co., Ltd | +86-0533-2185556 +8615965530500 | nickzhang@hangyubiotech.com | China | 9945 | 58 |
| Shanghai Acmec Biochemical Technology Co., Ltd. | +86-18621343501; +undefined18621343501 | product@acmec-e.com | China | 33324 | 58 |
| Aladdin Scientific | tp@aladdinsci.com | United States | 52923 | 58 |
View Lastest 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
4-Amino-2-methyl-5-propyl-2H-pyrazole-3-carboxylic acid
Propoxyphenyl Sildenafil
Homo Sildenafil
Sildenafil impurity
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
1of4
DESMETHYL SILDENAFIL
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 N-DesMethyl IMpurity
5-(2-Ethoxy-5-(piperazin-1-ylsulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one
Sildenafil N-desmethyl
Sildenafil N-desmethy impurity
Sildenafil EP Impurity F (Sildenafil N-Desmethyl Metabolite)
Sildenafil impurity A(Sildenafil N-Desmethyl Metabolite)
N-demethylsildenafil
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-
3-(4,7-Dihydro-1-methyl-7-oxo-3-pro
1-[[3-(4,7-Dihydro-1-methyl-7-oxo-3
Sildenafil impurities 7
5-[2-Ethoxy-5-(1-Piperazinylsulfonyl)Phenyl]-1-Methyl-3-Propyl-1,6-Dihydro-7H-Pyrazolo[4,3-d]Pyrimidin-7-One
N-Desmethyl Sildenafil Solution, 100ppm
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)phenyl]-1
Sildenafil Impurity Q
Sildenafil Q
N-Desmethyl Sildenafil Impurity
5-(2-ethoxy-5-(piperazin-1-ylsulfonyl)
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)phenyl]-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
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
Sildenafil N-DesMethyl Metabolite
Sildenafil Citrate Impurity F (EP)
N-DESMETHYL SILDEFIL
Sildenafil Citrate EP Impurity F (EP)
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
139755-82-1
C21H28N6O4S
Intermediates & Fine Chemicals
Metabolites & Impurities
Various Metabolites and Impurities
Pfizer compounds
Pharmaceuticals
