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| Product | Description | |
|---|---|---|
| Sildenafil Impurity 1 | Cas No. 845302-49-0. |  |
| Sildenafil Impurity 102 | Sildenafil Impurity 102. Uses: For analytical and research use. Group: Impurity standards. CAS No. 139756-30-2. Molecular formula: C16H18N4O2. Mole weight: 298.35. Catalog: APB139756302. |  |
| Sildenafil Impurity 14 | | |
| Sildenafil Impurity 15 | Sildenafil Impurity 15. Uses: For analytical and research use. Group: Impurity standards. CAS No. 139756-00-6. Molecular formula: C8H11N3O4. Mole weight: 213.19. Catalog: APB139756006. | |
| Sildenafil Impurity 15 (Isomer of Isobutyl Sildenafil) | | |
| Sildenafil Impurity 16 | Sildenafil Impurity 16. Uses: For analytical and research use. Group: Impurity standards. CAS No. 139756-01-7. Molecular formula: C8H12N4O3. Mole weight: 212.21. Catalog: APB139756017. | |
| Sildenafil Impurity ((1-methyl-4-Nitro -3-n-propyl pyrazole-5- carboxylic acid) | Cas No. 139756-00-6. | |
| Sildenafil Impurity 2 | Cas No. 332374-42-2. | |
| Sildenafil Impurity 22 | Sildenafil Impurity 22. Uses: For analytical and research use. Group: Impurity standards. CAS No. 139756-26-6. Molecular formula: C15H16N4O2. Mole weight: 284.32. Catalog: APB139756266. | |
| Sildenafil Impurity 3 | Cas No. 332374-45-5. | |
| Sildenafil Impurity 3 | Sildenafil Impurity 3. Uses: For analytical and research use. Group: Impurity standards. CAS No. 139756-02-8. Molecular formula: C8H14N4O. Mole weight: 182.23. Catalog: APB139756028. | |
| Sildenafil Impurity 4 | Cas No. 253178-46-0. | |
| Sildenafil Impurity 5 | Cas No. 732307-70-9. | |
| Sildenafil Impurity 57 | Sildenafil Impurity 57. Uses: For analytical and research use. Group: Impurity standards. CAS No. 139755-99-0. Molecular formula: C8H12N2O2. Mole weight: 168.2. Catalog: APB139755990. | |
| Sildenafil Impurity 6 | | |
| Sildenafil Impurity 72 (Acetildenafil Impurity 3) | Sildenafil Impurity 72 (Acetildenafil Impurity 3). Uses: For analytical and research use. Group: Impurity standards. CAS No. 1246820-46-1. Molecular formula: C28H38N6O5. Mole weight: 538.65. Catalog: APB1246820461. | |
| Sildenafil Impurity 8 | Sildenafil Impurity 8. Uses: For analytical and research use. Group: Impurity standards. CAS No. 139756-27-7. Molecular formula: C15H15ClN4O4S. Mole weight: 382.82. Catalog: APB139756277. | |
| Sildenafil Impurity 9 | Sildenafil Impurity 9. Uses: For analytical and research use. Group: Impurity standards. CAS No. 139756-31-3. Molecular formula: C16H17ClN4O4S. Mole weight: 396.85. Catalog: APB139756313. | |
| Sildenafil Impurity A | Cas No. 1391053-95-4. | |
| Sildenafil Impurity A (Isobutyl Sildenafil) | Cas No. 1391053-95-4. | |
| De(methypiperazinyl) Sildenafil Dimer Impurity | A related dimeric impurity of Sildenafil. Group: Biochemicals. Alternative Names: 5- [2-Ethoxy-5- [4- [4-ethoxy-3- (1-methyl-7-oxo-3-propyl-4, 7-dihydro-1H-pyrazolo [4, 3-d] pyrimidin-5-yl) phenyl] sulfonyl] phenyl] -1-methyl-3-n-propyl-1, 6-dihydro-7H-pyrazolo [4, 3-d] pyrimidin-7-one. Grades: Highly Purified. CAS No. 1346603-48-2. Pack Sizes: 2.5mg. US Biological Life Sciences. |  Worldwide |
| De(methypiperazinyl) Sildenafil Dimer Impurity | De(methypiperazinyl) Sildenafil Dimer Impurity. Uses: For analytical and research use. Group: Impurity standards. Pack Sizes: 2.5MG. Catalog: APS007332. Format: Neat. Shipping: Room Temperature. | |
| O-Desethyl Sildenafil (Sildenafil Impurity C) | Cas No. 139755-91-2. | |
| Sildenafil Amide Impurity | Cas No. 139756-01-7. | |
| Sildenafil Amide Impurity | Sildenafil Amide Impurity. Uses: For analytical and research use. Group: Impurity standards. CAS No. 139756-03-9. Molecular formula: C17H22N4O3. Mole weight: 330.39. Catalog: APB139756039. | |
| Sildenafil Dimer Impurity | A dimeric impurity of Sildenafil. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 10mg. US Biological Life Sciences. | Worldwide |
| Sildenafil Dimer Impurity | Cas No. 1346602-67-2. | |
| Sildenafil EP Impurity E | Cas No. 288-32-4. | |
| Sildenafil Methyl Sulfonate Ester Impurity | | |
| 3-[[[5-Aminocarbonyl-1-methyl-3-propyl-1H-pyrazol-4-yl]amino]carbonyl]-4-ethoxy-benzenesulfonyl Dimer | Sildenafil impurity derivative. Group: Biochemicals. Alternative Names: 3,3-Sulfonyl Bis[(4-Ethoxy-3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo-pyrimidin-5-yl)benzene). Grades: Highly Purified. Pack Sizes: 2.5mg. US Biological Life Sciences. | Worldwide |
| 3-(6,7-Dihydro-1-methyl-3-propyl-7-thioxo-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-benzenesulfonyl Chloride | Sildenafil impurity. Group: Biochemicals. Grades: Highly Purified. CAS No. 479074-07-2. Pack Sizes: 5mg. US Biological Life Sciences. | Worldwide |
| 3-Isobutyl-7-chloro-pyrazolo[4,3-d]pyrimidine | Used in the preparation of Sildenafil Citrate impurity. Group: Biochemicals. Alternative Names: 3-Isobutyl-7-chloro-1H-pyrazolo[4,3-d]pyrimidine. Grades: Highly Purified. Pack Sizes: 10mg. US Biological Life Sciences. | Worldwide |
| 3-Isobutylpyrazolo[4,3-d]pyrimidine | Sildenafil Citrate impurity. Group: Biochemicals. Alternative Names: 3-Isobutyl-1H-pyrazolo[4,3-d]pyrimidine. Grades: Highly Purified. Pack Sizes: 5mg. US Biological Life Sciences. | Worldwide |
| 4-[2-Ethoxy-3- (1-piperazinylsulfonyl) benzoamido]-1-methyl-3-propyl-1H-pyrazole-5-carboxamide | 4-[2-Ethoxy-3- (1-piperazinylsulfonyl) benzoamido]-1-methyl-3-propyl-1H-pyrazole-5-carboxamide is an impurity of Sildenafil. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg, 2.5mg. Molecular Formula: C21H30N6O5S, Molecular Weight: 478.57. US Biological Life Sciences. | Worldwide |
| 5-(2-Ethoxyphenyl)-1,6-dihydro-1-methyl-3-propyl-7H-pyrazolo[4,3-d]pyrimidine-7-thione | Sildenafil impurity. Group: Biochemicals. Alternative Names: 5-(2-Ethoxyphenyl)-1,4-dihydro-1-methyl-3-propyl-7H-pyrazolo[4,3-d]pyrimidine-7-thione. Grades: Highly Purified. CAS No. 479074-06-1. Pack Sizes: 25mg. US Biological Life Sciences. | Worldwide |
| 5-(2-Isobutyl)-4-amino-1H-pyrazole-3-carboxylic Acid | An intermediate in the synthesis of Sildenafil citrate impurity. Group: Biochemicals. Alternative Names: 4-Amino-5-(2-methylpropyl)-1H-pyrazole-3-carboxylic Acid. Grades: Highly Purified. CAS No. 1093415-88-3. Pack Sizes: 50mg. US Biological Life Sciences. | Worldwide |
| Demethylpiperazinyl Sildenafil Sulfonic Acid | Demethylpiperazinyl Sildenafil Sulfonic acid is an impurity of Sildenafil citrate. Group: Biochemicals. Alternative Names: 3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxybenzenesulfonic Acid. Grades: Highly Purified. Pack Sizes: 250mg. US Biological Life Sciences. | Worldwide |
| Imidazole | United States Pharmacopeia (USP) Reference Standard. Group: Pharmacopeia & metrological institutes standardsfood contact materialseuropean pharmacopoeia (ph. eur.)impurity standardspharmaceutical toxicologypharmacopoeial standards. Alternative Names: Imidazole, GR 228446X, Ondansetron Hydrochloride Dihydrate Imp. E (EP), USP Zanamivir Related Compounds Mixture, Clotrimazole Imp. D (EP), Zoledronic Acid Monohydrate Imp. C (Pharmeuropa), 1H-Imidazole, Enalapril Maleate Imp. I (EP), Ph Eur Ondansetron Impurity E, Ondansetron Imp. E (EP), Ph Eur Clotrimazole Impurity D, Imidazole (CCI 625), GR 212339X, Sildenafil Citrate Imp. E (EP), CCI 625, Ph Eur Zanamivir Impurity G,Bifonazole Imp. C (EP), GR 152919X, Enalapril Imp. I (EP), Sildenafil Imp. E (EP). | |
| N-Desmethyl Sildenafil Hemicitrate | N-Desmethyl Sildenafil Hemicitrate. Uses: For analytical and research use. Group: Impurity standards. Pack Sizes: 5MG. Catalog: APS010294. Format: Neat. Shipping: Room Temperature. | |
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