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Sildenafil Lactam Impurity | CAS No: 139756-21-1
| Catalogue Number: | GL-S0207 |
| Common name: | Sildenafil Lactam Impurity |
| Chemical Name: |
5-(2-Ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazole[4,3-d]pyrimidine-7-one |
| CAS: | 139756-21-1 |
| Molecular Formula: | C17H20N4O2 |
| Molecular Weight: | 312.37 |
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Sildenafil N-Desmethyl Thione Impurity
| CAT No : | GL-S0209 |
| CAS : | 479073-86-4 |
| Mol. weight | 476.62 |
![3-Isobutylpyrazolo[4,3-d]pyrimidine](https://glppharmastandards.com/product_images/optimised/3_isobutylpyrazolo[43_d]pyrimidine.webp "3-Isobutylpyrazolo[4,3-d]pyrimidine")
3-Isobutylpyrazolo[4,3-d]pyrimidine
| CAT No : | GL-S0210 |
| CAS : | 1346600-82-5 |
| Mol. weight | 176.22 |
Sildenafil Chlorosulfone O-Desethyl Impurity
| CAT No : | GL-S0215 |
| CAS : | 139756-27-7 |
| Mol. weight | 382.82 |
Des-4-methylpiperazine Desmethylsildenafil Chloride
| CAT No : | GL-S0216 |
| CAS : | 139756-31-3 |
| Mol. weight | 396.85 |
Sildenafil Chlorosulfone 2-Methyl Isomer
| CAT No : | GL-S0217 |
| CAS : | 501120-42-9 |
| Mol. weight | 410.88 |
Sildenafil Carboxylic Acid Impurity
| CAT No : | GL-S0219 |
| CAS : | 147676-78-6 |
| Mol. weight | 356.38 |
Sildenafil 2-Ethoxybenzoyl Chloride Impurity
| CAT No : | GL-S0222 |
| CAS : | 42926-52-3 |
| Mol. weight | 184.62 |
