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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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Brivaracetam Impurity 37 Brivaracetam Impurity 37. Uses: For analytical and research use. Alternative Names: (S)-methyl 2-((R)-2-oxo-4-propylpyrrolidin-1-yl)butanoate. Molecular formula: C12H21NO3. Mole weight: 227.3. Catalog: APB03389. Alfa Chemistry Analytical Products
Brivaracetam Impurity 39 Brivaracetam Impurity 39. Uses: For analytical and research use. Alternative Names: (S)-2-((R)-3-(hydroxymethyl)hexanamido)butanoic acid. Molecular formula: C11H21NO4. Mole weight: 231.29. Catalog: APB03388. Alfa Chemistry Analytical Products
Brivaracetam Impurity 42 Brivaracetam Impurity 42. Uses: For analytical and research use. Alternative Names: (S)-3-(bromomethyl)hexanoyl chloride. Molecular formula: C7H12BrClO. Mole weight: 227.53. Catalog: APB03387. Alfa Chemistry Analytical Products
Brivaracetam Impurity 43 Brivaracetam Impurity 43. Uses: For analytical and research use. Alternative Names: (4S)-methyl 2-oxo-4-propyltetrahydrofuran-3-carboxylate. Molecular formula: C9H14O4. Mole weight: 186.21. Catalog: APB01244. Alfa Chemistry Analytical Products
Brivaracetam Impurity 44 Brivaracetam Impurity 44. Uses: For analytical and research use. Alternative Names: (4S)-ethyl 2-oxo-4-propyltetrahydrofuran-3-carboxylate. Molecular formula: C10H16O4. Mole weight: 200.23. Catalog: APB01245. Alfa Chemistry Analytical Products
Brivaracetam Impurity 45 (Maleate) Brivaracetam Impurity 45 (Maleate). Uses: For analytical and research use. Alternative Names: (R)-ethyl 3-((((S)-1-amino-1-oxobutan-2-yl)amino)methyl)hexanoate maleate. Molecular formula: C13H26N2O3·C4H4O4. Mole weight: 374.43. Catalog: APB03386. Alfa Chemistry Analytical Products
Brivaracetam Impurity 47 Brivaracetam Impurity 47. Uses: For analytical and research use. Alternative Names: (R)-2-((R)-2-oxo-4-propylpyrrolidin-1-yl)butanoic acid. Molecular formula: C11H19NO3. Mole weight: 213.27. Catalog: APB01243. Alfa Chemistry Analytical Products
Brivaracetam Impurity 48 Brivaracetam Impurity 48. Uses: For analytical and research use. Alternative Names: 2-((R)-2-oxo-4-propylpyrrolidin-1-yl)butanoic acid. Molecular formula: C11H19NO3. Mole weight: 213.27. Catalog: APB01242. Alfa Chemistry Analytical Products
Brivaracetam Impurity 49 Brivaracetam Impurity 49. Uses: For analytical and research use. Alternative Names: (R)-N-((S)-1-amino-1-oxobutan-2-yl)-2-((R)-2-oxo-4-propylpyrrolidin-1-yl)butanamide. Molecular formula: C15H27N3O3. Mole weight: 297.39. Catalog: APB01241. Alfa Chemistry Analytical Products
Brivaracetam Impurity 50 Brivaracetam Impurity 50. Uses: For analytical and research use. Alternative Names: (R)-3-(bromomethyl)hexanoyl chloride. Molecular formula: C7H12BrClO. Mole weight: 227.53. Catalog: APB01240. Alfa Chemistry Analytical Products
Brivaracetam Impurity 53 Brivaracetam Impurity 53. Uses: For analytical and research use. Alternative Names: (2S)-2-((5-oxo-3-propyl-2,5-dihydrofuran-2-yl)amino)butanoic acid. Molecular formula: C11H17NO4. Mole weight: 227.26. Catalog: APB03384. Alfa Chemistry Analytical Products
Brivaracetam Impurity 54 Brivaracetam Impurity 54. Uses: For analytical and research use. Alternative Names: (2S)-methyl 2-((5-oxo-3-propyl-2,5-dihydrofuran-2-yl)amino)butanoate. Molecular formula: C12H19NO4. Mole weight: 241.28. Catalog: APB01239. Alfa Chemistry Analytical Products
Brivaracetam Impurity 55 Brivaracetam Impurity 55. Uses: For analytical and research use. Alternative Names: (2S,2'S)-2,2'-((1E,1'E)-ethane-1,2-diylidenebis(azanylylidene))dibutanamide. Molecular formula: C10H18N4O2. Mole weight: 226.28. Catalog: APB03383. Alfa Chemistry Analytical Products
Brivaracetam Impurity 56 Brivaracetam Impurity 56. Uses: For analytical and research use. Alternative Names: (2Z,4Z)-2,5-dipropylhexa-2,4-dienedial. Molecular formula: C12H18O2. Mole weight: 194.27. Catalog: APB01238. Alfa Chemistry Analytical Products
Brivaracetam Impurity 57 Brivaracetam Impurity 57. Uses: For analytical and research use. Alternative Names: 2-propylmalealdehyde. Molecular formula: C7H10O2. Mole weight: 126.15. Catalog: APB03385. Alfa Chemistry Analytical Products
Brivaracetam Impurity 58 Brivaracetam Impurity 58. Uses: For analytical and research use. Alternative Names: (2S)-2-((5-hydroxy-3-propyl-2,5-dihydrofuran-2-yl)amino)butanamide. Molecular formula: C11H20N2O3. Mole weight: 228.29. Catalog: APB01237. Alfa Chemistry Analytical Products
Brivaracetam Impurity 59 Brivaracetam Impurity 59. Uses: For analytical and research use. Alternative Names: (S)-2-(isocyanomethyl)pentan-1-ol. Molecular formula: C7H13NO. Mole weight: 127.18. Catalog: APB01320. Alfa Chemistry Analytical Products
Brivaracetam Impurity 60 Brivaracetam Impurity 60. Uses: For analytical and research use. Alternative Names: (R)-4-benzyl-3-((S)-2-(isocyanomethyl)pentanoyl)oxazolidin-2-one. Molecular formula: C17H20N2O3. Mole weight: 300.35. Catalog: APB01319. Alfa Chemistry Analytical Products
Brivaracetam Impurity 61 Brivaracetam Impurity 61. Uses: For analytical and research use. Alternative Names: 2-((R)-2,5-dioxo-3-propylpyrrolidin-1-yl)butanoic acid. Molecular formula: C11H17NO4. Mole weight: 227.26. Catalog: APB01317. Alfa Chemistry Analytical Products
Brivaracetam Impurity 62 Brivaracetam Impurity 62. Uses: For analytical and research use. Alternative Names: methyl 2-((R)-2-oxo-4-propylpyrrolidin-1-yl)butanoate. Molecular formula: C12H21NO3. Mole weight: 227.30. Catalog: APB01318. Alfa Chemistry Analytical Products
Brivaracetam Impurity 63 Brivaracetam Impurity 63. Uses: For analytical and research use. Molecular formula: C11H23ClN2O3. Mole weight: 266.77. Catalog: APB06884. Alfa Chemistry Analytical Products
Brivaracetam Impurity 64 Brivaracetam Impurity 64. Uses: For analytical and research use. Alternative Names: N-acetyl-2-((R)-2-oxo-4-propylpyrrolidin-1-yl)butanamide. Molecular formula: C13H22N2O3. Mole weight: 254.33. Catalog: APB01316. Alfa Chemistry Analytical Products
Brivaracetam Impurity 66 Brivaracetam Impurity 66. Uses: For analytical and research use. Alternative Names: (2S)-2-(2,5-dioxo-3-propylpyrrolidin-1-yl)butanamide. Molecular formula: C11H18N2O3. Mole weight: 226.27. Catalog: APB03382. Alfa Chemistry Analytical Products
Brivaracetam Impurity 67 Brivaracetam Impurity 67. Uses: For analytical and research use. Molecular formula: C15H30N4O3. Mole weight: 314.43. Catalog: APB06885. Alfa Chemistry Analytical Products
Brivaracetam Impurity 68 Brivaracetam Impurity 68. Uses: For analytical and research use. Alternative Names: (2S)-2-(2-hydroxy-5-oxo-3-propyl-2,5-dihydro-1H-pyrrol-1-yl)butanamide. Molecular formula: C11H18N2O3. Mole weight: 226.27. Catalog: APB03380. Alfa Chemistry Analytical Products
Brivaracetam Impurity 69 Brivaracetam Impurity 69. Uses: For analytical and research use. Alternative Names: (S)-N-((S)-1-amino-1-oxobutan-2-yl)-3-(bromomethyl)hexanamide. Molecular formula: C11H21BrN2O2. Mole weight: 293.2. Catalog: APB03381. Alfa Chemistry Analytical Products
Brivaracetam Impurity 70 Brivaracetam Impurity 70. Uses: For analytical and research use. Alternative Names: (S)-N-((R)-1-amino-1-oxobutan-2-yl)-3-(bromomethyl)hexanamide. Molecular formula: C11H21BrN2O2. Mole weight: 293.2. Catalog: APB03379. Alfa Chemistry Analytical Products
Brivaracetam Impurity 71 Brivaracetam Impurity 71. Uses: For analytical and research use. Molecular formula: C17H20N2O3. Mole weight: 300.36. Catalog: APB06887. Alfa Chemistry Analytical Products
Brivaracetam Impurity 72 Brivaracetam Impurity 72. Uses: For analytical and research use. Molecular formula: C17H20N2O3. Mole weight: 300.36. Catalog: APB06886. Alfa Chemistry Analytical Products
Brivaracetam Impurity 73 Brivaracetam Impurity 73. Uses: For analytical and research use. Molecular formula: C17H20N2O3. Mole weight: 300.36. Catalog: APB06888. Alfa Chemistry Analytical Products
Brivaracetam Impurity 75 Brivaracetam Impurity 75. Uses: For analytical and research use. Alternative Names: (S)-2-((R)-2-oxo-5-propylpyrrolidin-1-yl)butanamide. Molecular formula: C11H20N2O2. Mole weight: 212.29. Catalog: APB03378. Alfa Chemistry Analytical Products
Brivaracetam Impurity 76 Brivaracetam Impurity 76. Uses: For analytical and research use. Alternative Names: (R)-methyl 3-((((S)-1-amino-1-oxobutan-2-yl)amino)methyl)hexanoate. Molecular formula: C12H24N2O3. Mole weight: 244.33. Catalog: APB03377. Alfa Chemistry Analytical Products
Brivaracetam Impurity 77 Brivaracetam Impurity 77. Uses: For analytical and research use. Alternative Names: (Z)-2-propylhept-2-enal. Molecular formula: C10H18O. Mole weight: 154.25. Catalog: APB03376. Alfa Chemistry Analytical Products
Brivaracetam Impurity 82 Brivaracetam Impurity 82. Uses: For analytical and research use. Alternative Names: (R)-tert-butyl 3-(((S)-1-hydroxy-3-phenylpropan-2-yl)carbamoyl)hexanoate. Molecular formula: C20H31NO4. Mole weight: 349.46. Catalog: APB03375. Alfa Chemistry Analytical Products
Brivaracetam Impurity 83 Brivaracetam Impurity 83. Uses: For analytical and research use. Alternative Names: (S)-ethyl 2-((R)-2-oxo-4-propylpyrrolidin-1-yl)butanoate. Molecular formula: C13H23NO3. Mole weight: 241.33. Catalog: APB03374. Alfa Chemistry Analytical Products
Brivaracetam Impurity 84 Brivaracetam Impurity 84. Uses: For analytical and research use. Alternative Names: (S)-isopropyl 2-((S)-2-oxo-4-propylpyrrolidin-1-yl)butanoate. Molecular formula: C14H25NO3. Mole weight: 255.35. Catalog: APB03371. Alfa Chemistry Analytical Products
Brivaracetam Impurity 85 Brivaracetam Impurity 85. Uses: For analytical and research use. Alternative Names: (3R,3'R)-diethyl 3,3'-((((S)-1-amino-1-oxobutan-2-yl)azanediyl)bis(methylene))dihexanoate. Molecular formula: C22H42N2O5. Mole weight: 414.58. Catalog: APB03373. Alfa Chemistry Analytical Products
Brivaracetam Impurity 86 Brivaracetam Impurity 86. Uses: For analytical and research use. Alternative Names: (R)-ethyl 3-(ethoxymethyl)hexanoate. Molecular formula: C11H22O3. Mole weight: 202.29. Catalog: APB03372. Alfa Chemistry Analytical Products
Brivaracetam Impurity 87 Brivaracetam Impurity 87. Uses: For analytical and research use. Alternative Names: (R)-isopropyl 3-((((S)-1-amino-1-oxobutan-2-yl)amino)methyl)hexanoate. Molecular formula: C14H28N2O3. Mole weight: 272.38. Catalog: APB03370. Alfa Chemistry Analytical Products
Brivaracetam Impurity 88 Brivaracetam Impurity 88. Uses: For analytical and research use. Alternative Names: (R)-ethyl 3-(chloromethyl)hexanoate. Molecular formula: C9H17ClO2. Mole weight: 192.68. Catalog: APB03369. Alfa Chemistry Analytical Products
Brivaracetam Impurity 90 Brivaracetam Impurity 90. Uses: For analytical and research use. Alternative Names: (S)-isopropyl 3-((((S)-1-amino-1-oxobutan-2-yl)amino)methyl)hexanoate maleate. Molecular formula: C18H32N2O7. Mole weight: 388.46. Catalog: APB03367. Alfa Chemistry Analytical Products
Brivaracetam Impurity 91 Brivaracetam Impurity 91. Uses: For analytical and research use. Alternative Names: sodium (R)-3-(hydroxymethyl)hexanoate. Molecular formula: C7H13NaO3. Mole weight: 168.17. Catalog: APB03368. Alfa Chemistry Analytical Products
Brivaracetam Impurity 92 Brivaracetam Impurity 92. Uses: For analytical and research use. Alternative Names: 4-propylpyrrolidin-2-one. Molecular formula: C7H13NO. Mole weight: 127.18. Catalog: APB03366. Alfa Chemistry Analytical Products
Brivaracetam Impurity 93 Brivaracetam Impurity 93. Uses: For analytical and research use. Alternative Names: (S)-3-((((S)-1-amino-1-oxobutan-2-yl)amino)methyl)hexanoic acid compound with maleic acid (1:1). Molecular formula: C15H26N2O7. Mole weight: 346.38. Catalog: APB03365. Alfa Chemistry Analytical Products
Brivaracetam Impurity 94 Brivaracetam Impurity 94. Uses: For analytical and research use. Alternative Names: (Z)-3-((E)-(((S)-1-amino-1-oxobutan-2-yl)imino)methyl)hex-2-enoic acid. Molecular formula: C11H18N2O3. Mole weight: 226.27. Catalog: APB03364. Alfa Chemistry Analytical Products
Brivaracetam Impurity 95 Brivaracetam Impurity 95. Uses: For analytical and research use. Alternative Names: (S,Z)-N-(1-amino-1-oxobutan-2-yl)-3-formylhex-2-enamide. Molecular formula: C11H18N2O3. Mole weight: 226.27. Catalog: APB03363. Alfa Chemistry Analytical Products
Brivaracetam Impurity 96 Brivaracetam Impurity 96. Uses: For analytical and research use. Alternative Names: (S)-isopropyl 2-((R)-2-oxo-4-propylpyrrolidin-1-yl)butanoate. Molecular formula: C14H25NO3. Mole weight: 255.35. Catalog: APB03362. Alfa Chemistry Analytical Products
Brivaracetam Impurity 97 Brivaracetam Impurity 97. Uses: For analytical and research use. Alternative Names: (2S)-isopropyl 2-(2-oxo-4-propylpyrrolidin-1-yl)butanoate. Molecular formula: C14H25NO3. Mole weight: 255.35. Catalog: APB03361. Alfa Chemistry Analytical Products
Brivaracetam Impurity 98 Brivaracetam Impurity 98. Uses: For analytical and research use. Alternative Names: (2S)-2-(2-oxo-4-propylpyrrolidin-1-yl)butanoic acid. Molecular formula: C11H19NO3. Mole weight: 213.27. Catalog: APB03360. Alfa Chemistry Analytical Products
Brivaracet amoxidation Impurity 2 Brivaracet amoxidation Impurity 2. Uses: For analytical and research use. Alternative Names: (S)-2-((R)-2,5-dioxo-3-propylpyrrolidin-1-yl)butanoic acid. Molecular formula: C11H17NO4. Mole weight: 227.26. Catalog: APB01246. Alfa Chemistry Analytical Products
Brivudine Impurity 10 Brivudine Impurity 10. Uses: For analytical and research use. Alternative Names: 5-((Z)-2-bromovinyl)-1-((2R,4R,5R)-4-hydroxy-5-((((2R,4R,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione. Molecular formula: C16H21BrN2O8. Mole weight: 449.25. Catalog: APB03945. Alfa Chemistry Analytical Products
Brivudine Impurity 11 Brivudine Impurity 11. Uses: For analytical and research use. Alternative Names: 1-((2R,3S,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-5-iodopyrimidine-2,4(1H,3H)-dione. Molecular formula: C9H11IN2O6. Mole weight: 370.1. Catalog: APB03944. Alfa Chemistry Analytical Products
Brivudine Impurity 16 Brivudine Impurity 16. Uses: For analytical and research use. Alternative Names: 5-((Z)-2-bromovinyl)-1-((2S,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione. Molecular formula: C11H13BrN2O5. Mole weight: 333.14. Catalog: APB03942. Alfa Chemistry Analytical Products
Brivudine Impurity 2 Brivudine Impurity 2. Uses: For analytical and research use. Alternative Names: 7-bromo-6-((E)-2-bromovinyl)-2-((5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-8-(1-((5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-2,4-diazabicyclo[4.2.0]octane-3,5-dione. Molecular formula: C22H26Br2N4O10. Mole weight: 666.27. Catalog: APB03948. Alfa Chemistry Analytical Products
Brivudine Impurity 28 Brivudine Impurity 28. Uses: For analytical and research use. Molecular formula: C25H22Cl2N2O7. Mole weight: 533.36. Catalog: APB06804. Alfa Chemistry Analytical Products
Brivudine Impurity 6 Brivudine Impurity 6. Uses: For analytical and research use. Alternative Names: 5-((Z)-2-bromovinyl)-1-((2S,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)dihydropyrimidine-2,4(1H,3H)-dione. Molecular formula: C11H15BrN2O5. Mole weight: 335.15. Catalog: APB03947. Alfa Chemistry Analytical Products
Brivudine Impurity 7 Brivudine Impurity 7. Uses: For analytical and research use. Alternative Names: 5-((Z)-2-bromovinyl)-1-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)dihydropyrimidine-2,4(1H,3H)-dione. Molecular formula: C11H15BrN2O5. Mole weight: 335.15. Catalog: APB03946. Alfa Chemistry Analytical Products
Bromfenac impurity 10 Bromfenac impurity 10. Uses: For analytical and research use. Molecular formula: C15H13BrNNaO3. Mole weight: 358.17. Catalog: APB06429. Alfa Chemistry Analytical Products
Bromfenac impurity 11 Bromfenac impurity 11. Uses: For analytical and research use. Molecular formula: C15H11BrNNaO3. Mole weight: 356.15. Catalog: APB06428. Alfa Chemistry Analytical Products
Bromfenac impurity 13 Bromfenac impurity 13. Uses: For analytical and research use. Molecular formula: C30H18Br2N2O3. Mole weight: 614.29. Catalog: APB06431. Alfa Chemistry Analytical Products
Bromfenac impurity 15 Bromfenac impurity 15. Uses: For analytical and research use. Molecular formula: C15H10BrNO3. Mole weight: 332.15. Catalog: APB06430. Alfa Chemistry Analytical Products
Bromfenac impurity 16 Bromfenac impurity 16. Uses: For analytical and research use. Molecular formula: C15H10BrNO5. Mole weight: 364.15. Catalog: APB06432. Alfa Chemistry Analytical Products
Bromfenac impurity 18 Bromfenac impurity 18. Uses: For analytical and research use. Molecular formula: C30H18Br2N2O3. Mole weight: 614.29. Catalog: APB06433. Alfa Chemistry Analytical Products
Bromfenac impurity 19 Bromfenac impurity 19. Uses: For analytical and research use. Molecular formula: C15H8BrCl2NO. Mole weight: 369.04. Catalog: APB06434. Alfa Chemistry Analytical Products
Bromfenac impurity 6 Bromfenac impurity 6. Uses: For analytical and research use. Molecular formula: C15H8BrNO3. Mole weight: 330.13. Catalog: APB06427. Alfa Chemistry Analytical Products
Bromfenac sodium Impurity B (Sodium Salt) Bromfenac sodium Impurity B (Sodium Salt). Uses: For analytical and research use. Molecular formula: C14H9BrNNaO3. Mole weight: 342.12. Catalog: APB06425. Alfa Chemistry Analytical Products
Bromhexine EP Impurity A Bromhexine EP Impurity A. Uses: For analytical and research use. Alternative Names: (2-amino-3,5-dibromophenyl)methanol. Molecular formula: C7H7Br2NO. Mole weight: 280.94. Catalog: APB03422. Alfa Chemistry Analytical Products
Bromhexine EP Impurity B Bromhexine EP Impurity B. Uses: For analytical and research use. Alternative Names: 2-amino-3,5-dibromobenzaldehyde. Molecular formula: C7H5Br2NO. Mole weight: 278.93. Catalog: APB03421. Alfa Chemistry Analytical Products
Bromhexine hydrochloride Impurity Ta Bromhexine hydrochloride Impurity Ta. Uses: For analytical and research use. Alternative Names: 1631131-52-6(free base); 4-bromo-2-chloro-6-((cyclohexyl(methyl)amino)methyl)aniline hydrochloride. Molecular formula: C14H20BrClN2·HCl. Mole weight: 368.14. Catalog: APB01289. Alfa Chemistry Analytical Products
Bromhexine Impurity 10 Bromhexine Impurity 10. Uses: For analytical and research use. Alternative Names: (2-amino-3,5-dibromophenyl)methanol. Molecular formula: C7H7Br2NO. Mole weight: 280.94. Catalog: APB03424. Alfa Chemistry Analytical Products

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