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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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Sertraline Dimethyl Impurity Sertraline Dimethyl Impurity. Uses: For analytical and research use. Group: Impurity standards. CAS No. 122873-20-5. Molecular Formula: C18H19Cl2N. Mole Weight: 320.26. Catalog: APB122873205. Alfa Chemistry Analytical Products
Sertraline EP Impurity F Sertraline EP Impurity F. Uses: For analytical and research use. Group: Impurity standards. CAS No. 155748-61-1. Molecular Formula: C16H12Cl2O. Mole Weight: 291.17. Catalog: APB155748611. Alfa Chemistry Analytical Products
Sertraline EP Impurity F Enantiomer Sertraline EP Impurity F Enantiomer. Uses: For analytical and research use. Group: Impurity standards. CAS No. 124379-29-9. Molecular Formula: C16H12Cl2O. Mole Weight: 291.17. Catalog: APB124379299. Alfa Chemistry Analytical Products
Sertraline Impurity 17 Sertraline Impurity 17. Uses: For analytical and research use. Group: Impurity standards. CAS No. 124345-07-9. Molecular Formula: C17H17Cl2NO. Mole Weight: 322.23. Catalog: APB124345079. Alfa Chemistry Analytical Products
Sertraline Impurity 19 Sertraline Impurity 19. Uses: For analytical and research use. Group: Impurity standards. CAS No. 152448-80-1. Molecular Formula: C16H12Cl2O. Mole Weight: 291.17. Catalog: APB152448801. Alfa Chemistry Analytical Products
Sertraline Impurity 20 Sertraline Impurity 20. Uses: For analytical and research use. Group: Impurity standards. CAS No. 152642-35-8. Molecular Formula: C16H13Cl2NO. Mole Weight: 306.19. Catalog: APB152642358. Alfa Chemistry Analytical Products
Sertraline Impurity 31 Sertraline Impurity 31. Uses: For analytical and research use. Group: Impurity standards. CAS No. 2124277-87-6. Molecular Formula: C17H17Cl2N. Mole Weight: 306.23. Catalog: APB2124277876. Alfa Chemistry Analytical Products
Sertraline Impurity 9 Sertraline Impurity 9. Uses: For analytical and research use. Group: Impurity standards. CAS No. 140631-53-4. Molecular Formula: C17H17Cl2N. Mole Weight: 306.23. Catalog: APB140631534. Alfa Chemistry Analytical Products
Sevoflurane Impurity 14 Sevoflurane Impurity 14. Uses: For analytical and research use. Group: Impurity standards. CAS No. 194039-91-3. Molecular Formula: C5H5F7O2. Mole Weight: 230.08. Catalog: APB194039913. Alfa Chemistry Analytical Products
(S)-Frovatriptan (S)-Frovatriptan. Uses: For analytical and research use. Group: Impurity standards. CAS No. 158930-18-8. Molecular Formula: C14H17N3O. Mole Weight: 243.31. Catalog: APB158930188. Alfa Chemistry Analytical Products
Shikimic Acid Impurity 1 Shikimic Acid Impurity 1. Uses: For analytical and research use. Group: Impurity standards. CAS No. 101769-63-5. Molecular Formula: C9H14O5. Mole Weight: 202.21. Catalog: APB101769635. Alfa Chemistry Analytical Products
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. Alfa Chemistry Analytical Products
Sildenafil Derivative 8 Sildenafil Derivative 8. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1786437-29-3. Molecular Formula: C23H30N6O2S. Mole Weight: 454.59. Catalog: APB1786437293. Alfa Chemistry Analytical Products
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. Alfa Chemistry Analytical Products
Sildenafil Impurity 103 Sildenafil Impurity 103. Uses: For analytical and research use. Group: Impurity standards. CAS No. 173352-21-1. Molecular Formula: C15H21N3O2S. Mole Weight: 307.41. Catalog: APB173352211. Alfa Chemistry Analytical Products
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. Alfa Chemistry Analytical Products
Sildenafil Impurity 151 Sildenafil Impurity 151. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1441-87-8. Molecular Formula: C7H5ClO2. Mole Weight: 156.57. Catalog: APB1441878. Alfa Chemistry Analytical Products
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. Alfa Chemistry Analytical Products
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. Alfa Chemistry Analytical Products
Sildenafil Impurity 28 Sildenafil Impurity 28. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1425504-78-4. Molecular Formula: C25H36N6O4S. Mole Weight: 516.66. Catalog: APB1425504784. Alfa Chemistry Analytical Products
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. Alfa Chemistry Analytical Products
Sildenafil Impurity 50 Sildenafil Impurity 50. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1093065-15-6. Molecular Formula: C24H34N6O4S. Mole Weight: 502.63. Catalog: APB1093065156. Alfa Chemistry Analytical Products
Sildenafil Impurity 51 Sildenafil Impurity 51. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1363693-47-3. Molecular Formula: C24H34N6O4S. Mole Weight: 502.63. Catalog: APB1363693473. Alfa Chemistry Analytical Products
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. Alfa Chemistry Analytical Products
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. Alfa Chemistry Analytical Products
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. Alfa Chemistry Analytical Products
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. Alfa Chemistry Analytical Products
Sildenafil Impurity J Sildenafil Impurity J. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1971915-89-5. Molecular Formula: C19H24N4O5S. Mole Weight: 420.48. Catalog: APB1971915895. Alfa Chemistry Analytical Products
Sildenafil Pyrimidine Impurity Sildenafil Pyrimidine Impurity. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1346600-82-5. Molecular Formula: C9H12N4. Mole Weight: 176.22. Catalog: APB1346600825. Alfa Chemistry Analytical Products
Silibinin impurity 1 Silibinin impurity 1. Uses: For analytical and research use. Group: Impurity standards. CAS No. 142797-34-0. Molecular Formula: C25H22O10. Mole Weight: 482.44. Catalog: APB142797340. Alfa Chemistry Analytical Products
Silica Fume Silica Fume. Uses: For analytical and research use. Group: Process materials, geological, cement & soils. Catalog: APS012157. Shipping: Room Temperature. Alfa Chemistry Analytical Products
Silica gel Adsorbents (Inorganic); TLC Adsorbents; Resins & LC Separation Media. Uses: For analytical and research use. Group: Reagents. CAS No. 112926-00-8. Alfa Chemistry Analytical Products
Silicic acid Fluorescence/Luminescence Spectroscopy; Electronic Chemicals. Uses: For analytical and research use. Group: Reagents. CAS No. 7699-41-4. Alfa Chemistry Analytical Products
Silicon Carbide Silicon Carbide. Uses: For analytical and research use. Group: Process materials, geological, cement & soils. Catalog: APS003036. Shipping: Room Temperature. Alfa Chemistry Analytical Products
Silicon dioxide Silicon dioxide. Uses: For analytical and research use. Group: Metal alloys. Catalog: APS012174. Shipping: Room Temperature. Alfa Chemistry Analytical Products
Silicon dioxide Nanoparticles: Oxides, Nitrides, and Other Ceramics. Uses: For analytical and research use. Group: Reagents. CAS No. 7631-86-9. Alfa Chemistry Analytical Products
Silicon dioxide-Isotopic Silicon dioxide-Isotopic. Uses: For analytical and research use. Group: Aqueous inorganic; aqueous inorganic. Catalog: APS012175. Format: Neat. Shipping: Room Temperature. Alfa Chemistry Analytical Products
Silicone oil European Pharmacopoeia (Ph. Eur.); Pharmacopoeial Standards. Uses: For analytical and research use. Group: Reagents. Alternative Names: TFR 1476, Xiameter PMX 0210, Protect 5000, BY 24-312, ECC 4865, Silok 8580, RES 422, 612S, Silquat AT 5-49, JY 810, Y 12147, Rhodia 6600, Tegostab B 8919, Silco FLWK 137, Xiameter OFS 2396, B 8919, F 370, S 5100A, Dow Corning 3-4680, SH 200-1000CS, BD 304, X 62-7658, Matsumoto Silicone Softener 302, KF 96L5CS, RTV 3838A, SLJ 1320, PLY 7511, Dicsilicone Softener 120, X 62-7655, BX 16-152B, X 62-7629, Silquat AT 5-52, Elastosil 601, Y 17420, BY 222-067R, DA 6523, DC 184, SI-UGE, TPR 6600, KS 772, KF 9008, L 6910, HTR 1, Foamex 835, Glanol 950, ZBH 305, FZ 4157, Sitren 595, KS 358, Gensil 2000, PS 221, Y 12560, UV 9440E, GP 197, K 901, SFD 1, Dicsilicone Softener 300, Magnasoft HWS, Finish C 800, Dehesive 940A, Dow Corning 2-1463, Polydimethylsiloxanes, Reactosil RWS, V 12100, E 900, LTC 1100L, KET 3001, NuSil CV 2946, TC 1, Dow Corning 3-6121, Versilic, UAX 1600, X 21-3043, DC 200-60M, Dow Corning 7645, Nusil LS 6946, PMS 150, Rhodorsil 47V60000, Rossil Fluid, Dehesive 942, Q 2-7735,Polysiloxanes, di-Me, BY 11-042, Matsumoto Silicone Softener 318, X 21-5842, MED 4905, TSF 350C, KF 96A2CS, TSF 458-1008, Levaslip 432, FZ 4174, Tego 835, Levaslip 407, Siloxanes and Silicones, di-Me, LDC 2577D, C 800, PMS 200A, PS 038. CAS No. 63148-62-9. Alfa Chemistry Analytical Products
Silicon metal Silicon metal. Uses: For analytical and research use. Group: Metal alloys; process materials, geological, cement & soils. Catalog: APS003039. Shipping: Room Temperature. Alfa Chemistry Analytical Products
Sillimanite Sillimanite. Uses: For analytical and research use. Group: Process materials, geological, cement & soils. Catalog: APS012185. Shipping: Room Temperature. Alfa Chemistry Analytical Products
Sillimanite Schist Sillimanite Schist. Uses: For analytical and research use. Group: Process materials, geological, cement & soils. Catalog: APS012186. Shipping: Room Temperature. Alfa Chemistry Analytical Products
Silver acetate 99.99% trace metals basis. Uses: For analytical and research use. Group: Solution deposition precursors. CAS No. 563-63-3. Pack Sizes: 10G, 50G. Mole Weight: 166.91. EC Number: 209-254-9. Catalog: AP563633. Assay: 99.99% trace metals basis. Alfa Chemistry Analytical Products
Simvastatin 4'-Methyl Ether Simvastatin 4'-Methyl Ether. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (1S,3R,7S,8S,8aR)-1,2,3,7,8,8a-Hexahydro-3,7-dimethyl-8-[2-[(2R,4R)-tetrahydro-4-methoxy-6-oxo-2H-pyran-2-yl]ethyl]-1-naphthalenyl 2,2-dimethylbutanoate,Butanoic acid, 2,2-dimethyl-, (1S,3R,7S,8S,8aR)-1,2,3,7,8,8a-hexahydro-3,7-dimethyl-8-[2-[(2R,4R)-tetrahydro-4-methoxy-6-oxo-2H-pyran-2-yl]ethyl]-1-naphthalenyl ester, (1S,3R,7S,8S,8aR)-8-[2-[(2R,4R)-4-Methoxy-6-oxooxan-2-yl]ethyl]-3,7-dimethyl-1,2,3,7,8,8a-hexahydronaphthalen-1-yl 2,2-dimethylbutanoate. CAS No. 864357-88-0. IUPAC Name: [(1S,3R,7S,8S,8aR)-8-[2-[(2R,4R)-4-methoxy-6-oxooxan-2-yl]ethyl]-3,7-dimethyl-1,2,3,7,8,8a-hexahydronaphthalen-1-yl] 2,2-dimethylbutanoate. Molecular Formula: C26H40O5. Mole Weight: 432.59. Catalog: APS864357880. SMILES: CCC (C) (C)C (=O)O[C@H]1C[C@@H] (C)C=C2C=C[C@H] (C)[C@H] (CC[C@@H]3C[C@H] (CC (=O)O3)OC)[C@@H]12. Format: Neat. Alfa Chemistry Analytical Products
Simvastatin EP Impurity A Ammonium Salt Simvastatin EP Impurity A Ammonium Salt. Uses: For analytical and research use. Group: Impurity standards. CAS No. 139893-43-9. Molecular Formula: C25H43NO6. Mole Weight: 453.62. Catalog: APB139893439. Alfa Chemistry Analytical Products
Simvastatin EP impurity A (calcium salt) Simvastatin EP impurity A (calcium salt). Uses: For analytical and research use. Group: Impurity standards. CAS No. 151006-18-7. Molecular Formula: C25H42CaO6. Mole Weight: 478.68. Catalog: APB151006187. Alfa Chemistry Analytical Products
Simvastatin EP Impurity A Sodium Salt Simvastatin EP Impurity A Sodium Salt. Uses: For analytical and research use. Group: Impurity standards. CAS No. 101314-97-0. Molecular Formula: C25H39NaO6. Mole Weight: 458.57. Catalog: APB101314970. Alfa Chemistry Analytical Products
Simvastatin EP Impurity C Simvastatin EP Impurity C. Uses: For analytical and research use. Group: Impurity standards. CAS No. 210980-68-0. Molecular Formula: C25H36O4. Mole Weight: 400.56. Catalog: APB210980680. Alfa Chemistry Analytical Products
Simvastatin Impurity 17 Simvastatin Impurity 17. Uses: For analytical and research use. Group: Impurity standards. CAS No. 134970-32-4. Molecular Formula: C25H38O5. Mole Weight: 418.57. Catalog: APB134970324. Alfa Chemistry Analytical Products
Simvastatin Impurity 20 Simvastatin Impurity 20. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1092716-42-1. Molecular Formula: C25H38O7. Mole Weight: 450.57. Catalog: APB1092716421. Alfa Chemistry Analytical Products
Simvastatin Impurity 24 Simvastatin Impurity 24. Uses: For analytical and research use. Group: Impurity standards. CAS No. 159143-77-8. Molecular Formula: C25H40O7. Mole Weight: 452.59. Catalog: APB159143778. Alfa Chemistry Analytical Products
Simvastatin Impurity 25 Simvastatin Impurity 25. Uses: For analytical and research use. Group: Impurity standards. CAS No. 130468-11-0. Molecular Formula: C25H36O6. Mole Weight: 432.56. Catalog: APB130468110. Alfa Chemistry Analytical Products
Simvastatin Impurity 26 Simvastatin Impurity 26. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1426939-44-7. Molecular Formula: C25H36O5. Mole Weight: 416.56. Catalog: APB1426939447. Alfa Chemistry Analytical Products
Simvastatin Impurity 27 Simvastatin Impurity 27. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1092716-44-3. Molecular Formula: C25H38O7. Mole Weight: 450.7. Catalog: APB1092716443. Alfa Chemistry Analytical Products
Siponimod Siponimod. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1230487-00-9. Molecular Formula: C29H35F3N2O3. Mole Weight: 516.61. Catalog: APB1230487009. Alfa Chemistry Analytical Products
Sitaclonium chloride ( Cetalkonium Chloride ) Sitaclonium chloride ( Cetalkonium Chloride ). Uses: For analytical and research use. Group: Impurity standards. CAS No. 122-18-9. Molecular Formula: C25H46ClN. Mole Weight: 396.1. Catalog: APB122189. Alfa Chemistry Analytical Products
Sitafloxacin Impurity 23 Sitafloxacin Impurity 23. Uses: For analytical and research use. Group: Impurity standards. CAS No. 129306-06-5. Molecular Formula: C13H14N2O2. Mole Weight: 230.27. Catalog: APB129306065. Alfa Chemistry Analytical Products
Sitafloxacin Impurity 24 Sitafloxacin Impurity 24. Uses: For analytical and research use. Group: Impurity standards. CAS No. 129306-07-6. Molecular Formula: C13H18N2. Mole Weight: 202.3. Catalog: APB129306076. Alfa Chemistry Analytical Products
Sitafloxacin Impurity 25 Sitafloxacin Impurity 25. Uses: For analytical and research use. Group: Impurity standards. CAS No. 144282-35-9. Molecular Formula: C13H18N2. Mole Weight: 202.3. Catalog: APB144282359. Alfa Chemistry Analytical Products
Sitafloxacin Impurity 26 Sitafloxacin Impurity 26. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1432056-70-6. Molecular Formula: C18H26N2O2. Mole Weight: 302.42. Catalog: APB1432056706. Alfa Chemistry Analytical Products
Sitafloxacin Impurity 27 Sitafloxacin Impurity 27. Uses: For analytical and research use. Group: Impurity standards. CAS No. 101513-77-3. Molecular Formula: C7H2ClF3O2. Mole Weight: 210.54. Catalog: APB101513773. Alfa Chemistry Analytical Products
Sitafloxacin Impurity 8 Sitafloxacin Impurity 8. Uses: For analytical and research use. Group: Impurity standards. CAS No. 129306-12-3. Molecular Formula: C6H12N2. Mole Weight: 112.18. Catalog: APB129306123. Alfa Chemistry Analytical Products
Sitafloxacin Impurity 9 Sitafloxacin Impurity 9. Uses: For analytical and research use. Group: Impurity standards. CAS No. 144216-11-5. Molecular Formula: C10H5F2NO3. Mole Weight: 225.15. Catalog: APB144216115. Alfa Chemistry Analytical Products
Sitagliptin EP Impurity B Phosphate Sitagliptin EP Impurity B Phosphate. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1345822-87-8. Molecular Formula: C16H19F5N5O5P. Mole Weight: 487.32. Catalog: APB1345822878. Alfa Chemistry Analytical Products
Sitagliptin EP Impurity C Phosphate Sitagliptin EP Impurity C Phosphate. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1345822-86-7. Molecular Formula: C16H19F5N5O5P. Mole Weight: 487.32. Catalog: APB1345822867. Alfa Chemistry Analytical Products
Sitagliptin Impurity 04 Sitagliptin Impurity 04. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1675201-14-5. Molecular Formula: C16H12F6N4O. Mole Weight: 390.29. Catalog: APB1675201145. Alfa Chemistry Analytical Products
Sitagliptin Impurity 05 Sitagliptin Impurity 05. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1253056-18-6. Molecular Formula: C16H12F6N4O. Mole Weight: 390.29. Catalog: APB1253056186. Alfa Chemistry Analytical Products
Sitagliptin Impurity 09 Sitagliptin Impurity 09. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1253056-01-7. Molecular Formula: C16H14F6N4O2. Mole Weight: 408.3. Catalog: APB1253056017. Alfa Chemistry Analytical Products
Sitagliptin Impurity 22 Sitagliptin Impurity 22. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1253055-94-5. Molecular Formula: C19H20F3NO5. Mole Weight: 399.37. Catalog: APB1253055945. Alfa Chemistry Analytical Products
Sitagliptin Impurity 29 Sitagliptin Impurity 29. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1334244-28-8. Molecular Formula: C16H16F5N5O. Mole Weight: 389.33. Catalog: APB1334244288. Alfa Chemistry Analytical Products
Sitagliptin Impurity 46 Sitagliptin Impurity 46. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1234321-81-3. Molecular Formula: C13H12F3NO3. Mole Weight: 287.24. Catalog: APB1234321813. Alfa Chemistry Analytical Products

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