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Alfa Chemistry is a global leading supplier of analytical chemistry reagents, providing a wide range of analytical chemicals such as analytical standards for a variety of analytical applications.

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Valsartan Impurity 25 Valsartan Impurity 25. Uses: For analytical and research use. Group: Impurity standards. CAS No. 133051-88-4. Molecular Formula: C33H25BrN4. Mole Weight: 557.5. Catalog: APB133051884. Alfa Chemistry Analytical Products
Valsartan Impurity 37 Valsartan Impurity 37. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1071286-94-6. Molecular Formula: C19H20N2O2. Mole Weight: 308.38. Catalog: APB1071286946. Alfa Chemistry Analytical Products
Valsartan Impurity 40 (Sacubitril impurity 40) Valsartan Impurity 40 (Sacubitril impurity 40). Uses: For analytical and research use. Group: Impurity standards. CAS No. 1038924-97-8. Molecular Formula: C24H27NO4. Mole Weight: 393.48. Catalog: APB1038924978. Alfa Chemistry Analytical Products
Valsartan Impurity 48 (Sacubitril impurity 48) Valsartan Impurity 48 (Sacubitril impurity 48). Uses: For analytical and research use. Group: Impurity standards. CAS No. 1012341-48-8. Molecular Formula: C23H27NO4. Mole Weight: 381.46. Catalog: APB1012341488. Alfa Chemistry Analytical Products
Valsartan Impurity49 (Sacubitril impurity 49) Valsartan Impurity49 (Sacubitril impurity 49). Uses: For analytical and research use. Group: Impurity standards. CAS No. 1012341-50-2. Molecular Formula: C23H29NO4. Mole Weight: 383.49. Catalog: APB1012341502. Alfa Chemistry Analytical Products
Valsartan Impurity 71 Valsartan Impurity 71. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1331908-02-1. Molecular Formula: C24H26D3N5O3. Mole Weight: 438.55. Catalog: APB1331908021. Alfa Chemistry Analytical Products
Valsartan Impurity 77 Valsartan Impurity 77. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1283097-98-2. Molecular Formula: C24H27N5O3. Mole Weight: 433.51. Catalog: APB1283097982. Alfa Chemistry Analytical Products
Valsartan Impurity 78 Valsartan Impurity 78. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1332623-79-6. Molecular Formula: C22H25N5O3. Mole Weight: 407.47. Catalog: APB1332623796. Alfa Chemistry Analytical Products
Valsartan Impurity 82 Valsartan Impurity 82. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1015037-46-3. Molecular Formula: C23H27NO4. Mole Weight: 381.47. Catalog: APB1015037463. Alfa Chemistry Analytical Products
Valsartan Impurity 84 Valsartan Impurity 84. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1361408-16-3. Molecular Formula: C23H27NO4. Mole Weight: 381.47. Catalog: APB1361408163. Alfa Chemistry Analytical Products
Valsartan Impurity 85 Valsartan Impurity 85. Uses: For analytical and research use. Group: Impurity standards. CAS No. 128779-47-5. Molecular Formula: C20H23NO4. Mole Weight: 341.41. Catalog: APB128779475. Alfa Chemistry Analytical Products
Valsartan Impurity 8 (Irbesartan Impurity 26) Valsartan Impurity 8 (Irbesartan Impurity 26). Uses: For analytical and research use. Group: Impurity standards. CAS No. 152708-24-2. Molecular Formula: C14H11N7. Mole Weight: 277.29. Catalog: APB152708242. Alfa Chemistry Analytical Products
Valsartan Impurity I Valsartan Impurity I. Uses: For analytical and research use. Group: Impurity standards. CAS No. 188259-69-0. Molecular Formula: C24H29N5O4. Mole Weight: 451.53. Catalog: APB188259690. Alfa Chemistry Analytical Products
Vancomycin Vancomycin. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1404-90-6. Molecular Formula: C66H75Cl2N9O24. Mole Weight: 1449.26. Catalog: APB1404906. Alfa Chemistry Analytical Products
Vancomycin EP Impurity D Vancomycin EP Impurity D. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Desvancosaminylvancomycin B; O4.4-de-[2-O-(3-amino-2,3,6-trideoxy-3-C-methyl-a-L-lyxo-hexopyranosyl)-ß-D-glucopyranosyl]-O4.4-ß-D-glucopyranosyl-vancomycin B. CAS No. 101485-50-1. Molecular Formula: C59H62Cl2N8O22. Mole Weight: 1304.34. Catalog: APB101485501. Alfa Chemistry Analytical Products
Vandetanib Impurity 6 Vandetanib Impurity 6. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1346598-62-6. Molecular Formula: C22H20D4BrFN4O3. Mole Weight: 495.39. Catalog: APB1346598626. Alfa Chemistry Analytical Products
Vanillin Pharmacopeia & Metrological Institutes Standards; Food Additives, Flavours & Adulterants; European Pharmacopoeia (Ph. Eur.); Pharmacopoeial Standards. Uses: For analytical and research use. Group: Reagents. Alternative Names: 2-Methoxy-4-formylphenol, 4-Hydroxy-5-methoxybenzaldehyde, Vanillaldehyde, Vanillin (8CI), 4-Hydroxy-m-anisaldehyde, 3-Methoxy-4-hydroxybenzaldehyde, NPLC 0145, NSC 15351, p-Vanillin, Lioxin, 4-Formyl-2-methoxyphenol, NSC 403658, p-Hydroxy-m-methoxybenzaldehyde, m-Methoxy-p-hydroxybenzaldehyde,Vanillin, 4-Hydroxy-3-methoxybenzaldehyde, Benzaldehyde, 4-hydroxy-3-methoxy-, H 0264, Vanillum, Rhovanil, Vanillic aldehyde, 4-Hydroxy-3-methoxy-benzyldehyde, NSC 48383. CAS No. 121-33-5. Pack Sizes: 200MG. IUPAC Name: 4-hydroxy-3-methoxybenzaldehyde. Alfa Chemistry Analytical Products
Vanillin Allergen Standards; Natural Products. Uses: For analytical and research use. Group: Reagents. CAS No. 121-33-5. Alfa Chemistry Analytical Products
Vanillin Impurity 10 Vanillin Impurity 10. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1696-60-2. Molecular Formula: C16H16N2O4. Mole Weight: 300.31. Catalog: APB1696602. Alfa Chemistry Analytical Products
Vanillin Impurity 12 Vanillin Impurity 12. Uses: For analytical and research use. Group: Impurity standards. CAS No. 151719-92-5. Molecular Formula: C11H13ClO3. Mole Weight: 228.67. Catalog: APB151719925. Alfa Chemistry Analytical Products
Vardenafil hydrochloride EP impurity C Vardenafil hydrochloride EP impurity C. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1255919-03-9. Molecular Formula: C38H46N10O8S2. Mole Weight: 834.96. Catalog: APB1255919039. Alfa Chemistry Analytical Products
Vardenafil Impurity 10 Vardenafil Impurity 10. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1956364-77-4. Molecular Formula: C9H14ClN3O. Mole Weight: 215.68. Catalog: APB1956364774. Alfa Chemistry Analytical Products
Vardenafil Impurity 11 Vardenafil Impurity 11. Uses: For analytical and research use. Group: Impurity standards. CAS No. 18637-00-8. Molecular Formula: C9H13ClN2O. Mole Weight: 200.67. Catalog: APB18637008. Alfa Chemistry Analytical Products
Vasopressin Vasopressin. Uses: For analytical and research use. Group: Impurity standards. CAS No. 11000-17-2. Molecular Formula: C43H67N15O12S2. Mole Weight: 1050.22. Catalog: APB11000172. Alfa Chemistry Analytical Products
Vat Blue 6 Vat Blue 6. Uses: For analytical and research use. Group: Dyes (high purity). Alternative Names: 7,16-Dichlorodinaphtho[2,3-a:2',3'-h]phenazine-5,9,14,18(6H,15H)-tetraone. CAS No. 130-20-1. Molecular Formula: C28H12Cl2N2O4. Mole Weight: 511.31. Catalog: AP130201. Purity: 95%. Appearance: Solid. Storage: Store at 10 °C-25 °C. Alfa Chemistry Analytical Products
Vecuronium EP Impurity A (Pancuronium EP Impurity E) Vecuronium EP Impurity A (Pancuronium EP Impurity E). Uses: For analytical and research use. Group: Impurity standards. CAS No. 13529-31-2. Molecular Formula: C33H54N2O4. Mole Weight: 542.81. Catalog: APB13529312. Alfa Chemistry Analytical Products
Vecuronium EP Impurity B (Pancuronium) Vecuronium EP Impurity B (Pancuronium). Uses: For analytical and research use. Group: Impurity standards. CAS No. 15500-66-0. Molecular Formula: C35H60Br2N2O4. Mole Weight: 732.68. Catalog: APB15500660. Alfa Chemistry Analytical Products
Vecuronium EP Impurity F Vecuronium EP Impurity F. Uses: For analytical and research use. Group: Impurity standards. CAS No. 18668-29-6. Molecular Formula: C26H41NO3. Mole Weight: 415.62. Catalog: APB18668296. Alfa Chemistry Analytical Products
Vemurafenib Impurity 4 Vemurafenib Impurity 4. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1365986-90-8. Molecular Formula: C23H13D5ClF2N3O3S. Mole Weight: 494.95. Catalog: APB1365986908. Alfa Chemistry Analytical Products
Vemurafenib Impurity 5 Vemurafenib Impurity 5. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1365986-73-7. Molecular Formula: C23H11D7ClF2N3O3S. Mole Weight: 496.96. Catalog: APB1365986737. Alfa Chemistry Analytical Products
Venadaparib Impurity 11 Venadaparib Impurity 11. Uses: For analytical and research use. Group: Impurity standards. CAS No. 127828-88-0. Molecular Formula: C16H12N2O3. Mole Weight: 280.28. Catalog: APB127828880. Alfa Chemistry Analytical Products
Venadaparib Impurity 14 Venadaparib Impurity 14. Uses: For analytical and research use. Group: Impurity standards. CAS No. 16015-47-7. Molecular Formula: C10H8N2O3. Mole Weight: 204.19. Catalog: APB16015477. Alfa Chemistry Analytical Products
Venadaparib Impurity 15 Venadaparib Impurity 15. Uses: For analytical and research use. Group: Impurity standards. CAS No. 16015-48-8. Molecular Formula: C11H10N2O3. Mole Weight: 218.21. Catalog: APB16015488. Alfa Chemistry Analytical Products
Venadaparib Impurity 24 Venadaparib Impurity 24. Uses: For analytical and research use. Group: Impurity standards. CAS No. 160748-31-2. Molecular Formula: C16H10ClN3O. Mole Weight: 295.73. Catalog: APB160748312. Alfa Chemistry Analytical Products
Venadaparib Impurity 25 Venadaparib Impurity 25. Uses: For analytical and research use. Group: Impurity standards. CAS No. 16015-59-1. Molecular Formula: C16H13N3O2. Mole Weight: 279.3. Catalog: APB16015591. Alfa Chemistry Analytical Products
Venadaparib Impurity 30 Venadaparib Impurity 30. Uses: For analytical and research use. Group: Impurity standards. CAS No. 16015-49-9. Molecular Formula: C16H12N2O3. Mole Weight: 280.28. Catalog: APB16015499. Alfa Chemistry Analytical Products
Venadaparib Impurity 31 Venadaparib Impurity 31. Uses: For analytical and research use. Group: Impurity standards. CAS No. 16015-57-9. Molecular Formula: C11H11N3O2. Mole Weight: 217.23. Catalog: APB16015579. Alfa Chemistry Analytical Products
Venadaparib Impurity 33 Venadaparib Impurity 33. Uses: For analytical and research use. Group: Impurity standards. CAS No. 18584-75-3. Molecular Formula: C10H10N4O2. Mole Weight: 218.22. Catalog: APB18584753. Alfa Chemistry Analytical Products
Venadaparib Impurity 40 Venadaparib Impurity 40. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1681017-95-7. Molecular Formula: C24H25FN4O2. Mole Weight: 420.49. Catalog: APB1681017957. Alfa Chemistry Analytical Products
Venadaparib Impurity 6 Venadaparib Impurity 6. Uses: For analytical and research use. Group: Impurity standards. CAS No. 107558-48-5. Molecular Formula: C14H11N3O. Mole Weight: 237.26. Catalog: APB107558485. Alfa Chemistry Analytical Products
Venetoclax Venetoclax. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 2- ( (1H-pyrrolo[2, 3-b]pyridin-5-yl) oxy) -4- (4- ( (4'-chloro-5, 5-dimethyl-3, 4, 5, 6-tetrahydro-[1, 1'-biphenyl]-2-yl) methyl) piperazin-1-yl) -N- ( (3-nitro-4- ( ( (tetrahydro-2H-pyran-4-yl) methyl) amino) phenyl) sulfonyl) benzamide. CAS No. 1257044-40-8. Molecular Formula: C45H50ClN7O7S. Mole Weight: 868.44. Catalog: APB1257044408. Alfa Chemistry Analytical Products
Venetoclax Impurity 10 Venetoclax Impurity 10. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: tert-butyl 4-((4'-chloro-5,5-dimethyl-3,4,5,6-tetrahydro-[1,1'-biphenyl]-2-yl)methyl)piperazine-1-carboxylate. CAS No. 1228780-71-9. Molecular Formula: C24H35ClN2O2. Mole Weight: 419.00. Catalog: APB1228780719. Alfa Chemistry Analytical Products
Venetoclax Impurity 17 Venetoclax Impurity 17. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: methyl 2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-fluorobenzoate. CAS No. 1235865-75-4. Molecular Formula: C15H11FN2O3. Mole Weight: 286.26. Catalog: APB1235865754. Alfa Chemistry Analytical Products
Venetoclax Impurity 5 (2-chloro-3-nitrobenzenesulfonamide) Venetoclax Impurity 5 (2-chloro-3-nitrobenzenesulfonamide). Uses: For analytical and research use. Group: Impurity standards. CAS No. 1261761-91-4. Molecular Formula: C6H5ClN2O4S. Mole Weight: 236.63. Catalog: APB1261761914. Alfa Chemistry Analytical Products
Venetoclax Impurity 6 Venetoclax Impurity 6. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: methyl 2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(4-((4'-chloro-5,5-dimethyl-3,4,5,6-tetrahydro-[1,1'-biphenyl]-2-yl)methyl)piperazin-1-yl)benzoate. CAS No. 1235865-76-5. Molecular Formula: C34H37ClN4O3. Mole Weight: 585.14. Catalog: APB1235865765. Alfa Chemistry Analytical Products
Venetoclax Impurity 7 Venetoclax Impurity 7. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(4-((4'-chloro-5,5-dimethyl-3,4,5,6-tetrahydro-[1,1'-biphenyl]-2-yl)methyl)piperazin-1-yl)benzoic acid. CAS No. 1235865-77-6. Molecular Formula: C33H35ClN4O3. Mole Weight: 571.11. Catalog: APB1235865776. Alfa Chemistry Analytical Products
Venetoclax Impurity 8 Venetoclax Impurity 8. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 4'-chloro-5,5-dimethyl-3,4,5,6-tetrahydro-[1,1'-biphenyl]-2-carbaldehyde. CAS No. 1228837-05-5. Molecular Formula: C15H17ClO. Mole Weight: 248.75. Catalog: APB1228837055. Alfa Chemistry Analytical Products
Venetoclax Impurity 9 Venetoclax Impurity 9. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (4'-chloro-5,5-dimethyl-3,4,5,6-tetrahydro-[1,1'-biphenyl]-2-yl)methanol. CAS No. 1228780-51-5. Molecular Formula: C15H19ClO. Mole Weight: 250.76. Catalog: APB1228780515. Alfa Chemistry Analytical Products
Venlafaxine EP Impurity C HCl Venlafaxine EP Impurity C HCl. Uses: For analytical and research use. Group: Impurity standards. CAS No. 130198-05-9. Molecular Formula: C15H24ClNO2. Mole Weight: 285.81. Catalog: APB130198059. Alfa Chemistry Analytical Products
Venlafaxine EP Impurity G Venlafaxine EP Impurity G. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1076199-92-2. Molecular Formula: C17H27NO. Mole Weight: 261.41. Catalog: APB1076199922. Alfa Chemistry Analytical Products
Venlafaxine EP Impurity G HCl Venlafaxine EP Impurity G HCl. Uses: For analytical and research use. Group: Impurity standards. CAS No. 2108968-20-1. Molecular Formula: C17H28ClNO. Mole Weight: 297.87. Catalog: APB2108968201. Alfa Chemistry Analytical Products
Venlafaxine EP Impurity H Venlafaxine EP Impurity H. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1329795-88-1. Molecular Formula: C24H33NO3. Mole Weight: 383.53. Catalog: APB1329795881. Alfa Chemistry Analytical Products
Venlafaxine Impurity 12 Venlafaxine Impurity 12. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1346601-14-6. Molecular Formula: C25H35NO3. Mole Weight: 397.56. Catalog: APB1346601146. Alfa Chemistry Analytical Products
Venlafaxine Impurity 13 Venlafaxine Impurity 13. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1346605-18-2. Molecular Formula: C16H25NO. Mole Weight: 247.38. Catalog: APB1346605182. Alfa Chemistry Analytical Products
Venlafaxine Impurity 40 Venlafaxine Impurity 40. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1062606-12-5. Molecular Formula: C17H22D6ClNO2. Mole Weight: 319.9. Catalog: APB1062606125. Alfa Chemistry Analytical Products
Venlafaxine Impurity 5 Venlafaxine Impurity 5. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1346600-77-8. Molecular Formula: C13H19NO3. Mole Weight: 237.3. Catalog: APB1346600778. Alfa Chemistry Analytical Products
Verapamil EP Impurity A Verapamil EP Impurity A. Uses: For analytical and research use. Group: Impurity standards. CAS No. 141991-88-0. Molecular Formula: C25H38N2O4. Mole Weight: 430.59. Catalog: APB141991880. Alfa Chemistry Analytical Products
Verapamil EP Impurity B HCl Verapamil EP Impurity B HCl. Uses: For analytical and research use. Group: Impurity standards. CAS No. 13078-76-7. Molecular Formula: C11H18ClNO2. Mole Weight: 231.72. Catalog: APB13078767. Alfa Chemistry Analytical Products
Verapamil EP Impurity I HCl Verapamil EP Impurity I HCl. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1794-55-4. Molecular Formula: C26H37ClN2O4. Mole Weight: 477.04. Catalog: APB1794554. Alfa Chemistry Analytical Products
Verapamil EP Impurity L Verapamil EP Impurity L. Uses: For analytical and research use. Group: Impurity standards. CAS No. 14046-55-0. Molecular Formula: C12H16O3. Mole Weight: 208.26. Catalog: APB14046550. Alfa Chemistry Analytical Products
Vericiguat Impurity 1 Vericiguat Impurity 1. Uses: For analytical and research use. Group: Impurity standards. CAS No. 2112745-90-9. Molecular Formula: C25H24F2N8O8. Mole Weight: 602.51. Catalog: APB2112745909. Alfa Chemistry Analytical Products
Vericiguat Impurity 2 Vericiguat Impurity 2. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1361570-69-5. Molecular Formula: C19H15F2N7O2. Mole Weight: 411.37. Catalog: APB1361570695. Alfa Chemistry Analytical Products
Vericiguat Impurity 9 Vericiguat Impurity 9. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1361570-70-8. Molecular Formula: C20H17F2N7O2. Mole Weight: 425.4. Catalog: APB1361570708. Alfa Chemistry Analytical Products
Verinurad Verinurad. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1352792-74-5. Molecular Formula: C20H16N2O2S. Mole Weight: 348.42. Catalog: APB1352792745. Alfa Chemistry Analytical Products
Verinurad Impurity1 Verinurad Impurity1. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1432589-51-9. Molecular Formula: C22H20N2O2S. Mole Weight: 376.47. Catalog: APB1432589519. Alfa Chemistry Analytical Products
Verinurad Impurity11 Verinurad Impurity11. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1352793-87-3. Molecular Formula: C18H12N2O2S. Mole Weight: 320.37. Catalog: APB1352793873. Alfa Chemistry Analytical Products
Verinurad Impurity12 Verinurad Impurity12. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1877347-38-0. Molecular Formula: C18H16N2O2S. Mole Weight: 324.4. Catalog: APB1877347380. Alfa Chemistry Analytical Products
Verinurad Impurity13 Verinurad Impurity13. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1877347-86-8. Molecular Formula: C19H18N2O2S. Mole Weight: 338.43. Catalog: APB1877347868. Alfa Chemistry Analytical Products
Verinurad Impurity17 Verinurad Impurity17. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1877347-77-7. Molecular Formula: C20H10D6N2O2S. Mole Weight: 354.46. Catalog: APB1877347777. Alfa Chemistry Analytical Products
Verinurad Impurity4 Verinurad Impurity4. Uses: For analytical and research use. Group: Impurity standards. CAS No. 125305-75-1. Molecular Formula: C9H11NO2S. Mole Weight: 197.25. Catalog: APB125305751. Alfa Chemistry Analytical Products

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