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Type:Nitrosamines & NDSRI
Total Products: 52
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Omeprazole Related Products
Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Omeprazole and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Omeprazole impurities, metabolites, nitrosamine derivatives (N-NO compounds), and stable isotope-labeled products. These reference standards play a critical role in pharmaceutical R&D, supporting activities such as product formulation, ANDA and DMF submissions, quality assurance, analytical method development, and stability assessments.
All Omeprazole-related substances undergo comprehensive characterization and are delivered with complete Certificates of Analysis and supporting analytical documentation to ensure regulatory adherence. Upon request, we can offer EP/USP traceable standards. Our products are routinely re-evaluated to maintain consistent quality and performance.
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N-Nitroso Omeprazole impurity 1
CAT No: CL-OPS-NO-01 CAS No: NA Mol Wt: 344.39 Mol F: C16H16N4O3S Inv Status: Justification
Chemical Name: 2-(((3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-5-methoxy-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 2
CAT No: CL-OPS-NO-03 CAS No: NA Mol Wt: 179.2 Mol F: C7H5N3OS Inv Status: Justification
Chemical Name: 1-nitroso-1H-benzo[d]imidazole-2-thiol
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N-Nitroso Omeprazole impurity 4
CAT No: CL-OPS-NO-04 CAS No: NA Mol Wt: 209.22 Mol F: C8H7N3O2S Inv Status: Custom Synthesis
Chemical Name: 5-methoxy-1-nitroso-1H-benzo[d]imidazole-2-thiol
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N-Nitroso Omeprazole impurity 5
CAT No: CL-OPS-NO-05 CAS No: NA Mol Wt: 344.39 Mol F: C16H16N4O3S Inv Status: Custom Synthesis
Chemical Name: 2-(((3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-5-methoxy-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 6
CAT No: CL-OPS-NO-06 CAS No: NA Mol Wt: 358.42 Mol F: C17H18N4O3S Inv Status: Custom Synthesis
Chemical Name: 5-methoxy-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)thio)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 7
CAT No: CL-OPS-NO-07 CAS No: NA Mol Wt: 390.41 Mol F: C17H18N4O5S Inv Status: Custom Synthesis
Chemical Name: 5-methoxy-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfonyl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 8
CAT No: CL-OPS-NO-08 CAS No: NA Mol Wt: 390.41 Mol F: C17H18N4O5S Inv Status: Custom Synthesis
Chemical Name: 4-methoxy-2-(((5-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)sulfinyl)methyl)-3,5-dimethylpyridine 1-oxide
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N-Nitroso Omeprazole impurity 9
CAT No: CL-OPS-NO-09 CAS No: NA Mol Wt: 378.83 Mol F: C16H15ClN4O3S Inv Status: Custom Synthesis
Chemical Name: 2-(((4-chloro-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-5-methoxy-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 10
CAT No: CL-OPS-NO-10 CAS No: NA Mol Wt: 378.83 Mol F: C16H15ClN4O3S Inv Status: Custom Synthesis
Chemical Name: 2-(((4-chloro-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-5-methoxy-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 11
CAT No: CL-OPS-NO-11 CAS No: NA Mol Wt: 360.39 Mol F: C16H61N4O4S Inv Status: Custom Synthesis
Chemical Name: 2-(((6-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)sulfinyl)methyl)-3,5-dimethylpyridin-4-ol
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N-Nitroso Omeprazole impurity 12
CAT No: CL-OPS-NO-12 CAS No: NA Mol Wt: 374.42 Mol F: C17H18N4O4S Inv Status: Custom Synthesis
Chemical Name: (S)-5-methoxy-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 13
CAT No: CL-OPS-NO-13 CAS No: NA Mol Wt: 374.42 Mol F: C17H18N4O4S Inv Status: Custom Synthesis
Chemical Name: 5-methoxy-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 14
CAT No: CL-OPS-NO-14 CAS No: NA Mol Wt: 374.42 Mol F: C17H18N4O4S Inv Status: Custom Synthesis
Chemical Name: (R)-6-methoxy-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 15
CAT No: CL-OPS-NO-15 CAS No: NA Mol Wt: 374.42 Mol F: C17H18N4O4S Inv Status: Custom Synthesis
Chemical Name: (R)-6-methoxy-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 16
CAT No: CL-OPS-NO-16 CAS No: NA Mol Wt: 374.42 Mol F: C17H18N4O4S Inv Status: Custom Synthesis
Chemical Name: (R)-6-methoxy-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 17
CAT No: CL-OPS-NO-17 CAS No: NA Mol Wt: 566.65 Mol F: C26H26N6O5S2 Inv Status: Custom Synthesis
Chemical Name: 6-methoxy-2-(((4-methoxy-6-(((5-methoxy-1H-benzo[d]imidazol-2-yl)sulfinyl)methyl)-3,5-dimethylpyridin-2-yl)methyl)thio)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 18
CAT No: CL-OPS-NO-18 CAS No: NA Mol Wt: 566.65 Mol F: C26H26N6O5S2 Inv Status: Custom Synthesis
Chemical Name: 5-methoxy-2-(((4-methoxy-6-(((6-methoxy-1H-benzo[d]imidazol-2-yl)thio)methyl)-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 19
CAT No: CL-OPS-NO-19 CAS No: NA Mol Wt: 312.33 Mol F: C16H16N4O3 Inv Status: Custom Synthesis
Chemical Name: 2-((5-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)methyl)-3,5-dimethylpyridin-4(1H)-one
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N-Nitroso Omeprazole impurity 20
CAT No: CL-OPS-NO-20 CAS No: NA Mol Wt: 312.33 Mol F: C16H16N4O3 Inv Status: Custom Synthesis
Chemical Name: 2-((5-methoxy-1H-benzo[d]imidazol-2-yl)methyl)-3,5-dimethyl-1-nitrosopyridin-4(1H)-one
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N-Nitroso Omeprazole impurity 21
CAT No: CL-OPS-NO-21 CAS No: NA Mol Wt: 344.39 Mol F: C16H16N4O3S Inv Status: Custom Synthesis
Chemical Name: 2-(((6-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)thio)methyl)-3,5-dimethylpyridin-4(1H)-one
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N-Nitroso Omeprazole impurity 22
CAT No: CL-OPS-NO-22 CAS No: NA Mol Wt: 344.39 Mol F: C16H16N4O3S Inv Status: Custom Synthesis
Chemical Name: 2-(((6-methoxy-1H-benzo[d]imidazol-2-yl)thio)methyl)-3,5-dimethyl-1-nitrosopyridin-4(1H)-one
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N-Nitroso Omeprazole impurity 23
CAT No: CL-OPS-NO-23 CAS No: NA Mol Wt: 342.37 Mol F: C16H14N4O3S Inv Status: Custom Synthesis
Chemical Name: 2-(5-methoxy-1-nitroso-1H-benzo[d]imidazole-2-carbonothioyl)-3,5-dimethylpyridin-4(1H)-one
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N-Nitroso Omeprazole impurity 24
CAT No: CL-OPS-NO-24 CAS No: NA Mol Wt: 341.37 Mol F: C16H13N4O3S Inv Status: Custom Synthesis
Chemical Name: 2-(5-methoxy-1l2-benzo[d]imidazole-2-carbonothioyl)-3,5-dimethyl-1-nitrosopyridin-4(1H)-one
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N-Nitroso Omeprazole impurity 25
CAT No: CL-OPS-NO-25 CAS No: NA Mol Wt: 374.42 Mol F: C17H18N4O4S Inv Status: Custom Synthesis
Chemical Name: 2-(((5-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)sulfinyl)methyl)-1,3,5-trimethylpyridin-4(1H)-one
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N-Nitroso Omeprazole impurity 26
CAT No: CL-OPS-NO-26 CAS No: NA Mol Wt: 374.42 Mol F: C17H18N4O4S Inv Status: Custom Synthesis
Chemical Name: 2-(((5-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)sulfinyl)methyl)-1,3,5-trimethylpyridin-4(1H)-one
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N-Nitroso Omeprazole impurity 27
CAT No: CL-OPS-NO-27 CAS No: NA Mol Wt: 374.42 Mol F: C17H18N4O4S Inv Status: Custom Synthesis
Chemical Name: 2-(((5-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)sulfinyl)methyl)-1,3,5-trimethylpyridin-4(1H)-one
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N-Nitroso Omeprazole impurity 28
CAT No: CL-OPS-NO-28 CAS No: NA Mol Wt: 360.39 Mol F: C16H16N4O4S Inv Status: Custom Synthesis
Chemical Name: 2-(((5-methoxy-1H-benzo[d]imidazol-2-yl)sulfinyl)methyl)-3,5-dimethyl-1-nitrosopyridin-4(1H)-one
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N-Nitroso Omeprazole impurity 29
CAT No: CL-OPS-NO-29 CAS No: NA Mol Wt: 314.3 Mol F: C16H18N4O3 Inv Status: Custom Synthesis
Chemical Name: 2-((5-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)methyl)-3,5-dimethyl-1,4-dihydropyridin-4-ol
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N-Nitroso Omeprazole impurity 30
CAT No: CL-OPS-NO-30 CAS No: NA Mol Wt: 314.3 Mol F: C16H18N4O3 Inv Status: Custom Synthesis
Chemical Name: 2-((5-methoxy-1H-benzo[d]imidazol-2-yl)methyl)-3,5-dimethyl-1-nitroso-1,4-dihydropyridin-4-ol
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N-Nitroso Omeprazole impurity 31
CAT No: CL-OPS-NO-31 CAS No: NA Mol Wt: 388.398 Mol F: C17H16N4O5S Inv Status: Custom Synthesis
Chemical Name: ((5-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)sulfinyl)(4-methoxy-3,5-dimethylpyridin-2-yl)methanone
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N-Nitroso Omeprazole impurity 32
CAT No: CL-OPS-NO-32 CAS No: NA Mol Wt: 209.225 Mol F: C8H7N3O2S Inv Status: Custom Synthesis
Chemical Name: 4-methoxy-1-nitroso-1H-benzo[d]imidazole-2(3H)-thione
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N-Nitroso Omeprazole impurity 33
CAT No: CL-OPS-NO-33 CAS No: NA Mol Wt: 209.225 Mol F: C8H7N3O2S Inv Status: Custom Synthesis
Chemical Name: 7-methoxy-1-nitroso-1H-benzo[d]imidazole-2(3H)-thione
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N-Nitroso Omeprazole impurity 34
CAT No: CL-OPS-NO-34 CAS No: NA Mol Wt: 344.388 Mol F: C16H16N4O3S Inv Status: Custom Synthesis
Chemical Name: 2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 35
CAT No: CL-OPS-NO-35 CAS No: NA Mol Wt: 314.362 Mol F: C15H14N4O2S Inv Status: Custom Synthesis
Chemical Name: 2-(((3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 36
CAT No: CL-OPS-NO-36 CAS No: NA Mol Wt: 374.414 Mol F: C17H18N4O4S Inv Status: Custom Synthesis
Chemical Name: 6-methoxy-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 37
CAT No: CL-OPS-NO-37 CAS No: NA Mol Wt: 257.223 Mol F: C8H7N3O5S Inv Status: Custom Synthesis
Chemical Name: 5-methoxy-1-nitroso-1H-benzo[d]imidazole-2-sulfonic acid
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N-Nitroso Omeprazole impurity 38
CAT No: CL-OPS-NO-38 CAS No: NA Mol Wt: 328.366 Mol F: C17H20N4O Inv Status: Custom Synthesis
Chemical Name: 2-(2-(5-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)ethyl)-3,5-dimethyl-1,4-dihydropyridin-4-ol
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N-Nitroso Omeprazole impurity 39
CAT No: CL-OPS-NO-39 CAS No: NA Mol Wt: 328.366 Mol F: C17H20N4O3 Inv Status: Custom Synthesis
Chemical Name: 2-(2-(5-methoxy-1H-benzo[d]imidazol-2-yl)ethyl)-3,5-dimethyl-1-nitroso-1,4-dihydropyridin-4-ol
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N-Nitroso Omeprazole impurity 40
CAT No: CL-OPS-NO-40 CAS No: NA Mol Wt: 418.424 Mol F: C18H18N4O6S Inv Status: Custom Synthesis
Chemical Name: methyl 4-methoxy-6-(((6-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)sulfinyl)methyl)-5-methylnicotinate
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N-Nitroso Omeprazole impurity 41
CAT No: CL-OPS-NO-41 CAS No: NA Mol Wt: 450.51 Mol F: C23H22N4O4S Inv Status: Custom Synthesis
Chemical Name: 6-(benzyloxy)-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 42
CAT No: CL-OPS-NO-42 CAS No: NA Mol Wt: 344.388 Mol F: C16H16N4O3S Inv Status: Custom Synthesis
Chemical Name: 2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)thio)-1-nitroso-1H-benzo[d]imidazol-6-ol
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N-Nitroso Omeprazole impurity 43
CAT No: CL-OPS-NO-43 CAS No: NA Mol Wt: 326.35 Mol F: C17H18N4O3 Inv Status: Custom Synthesis
Chemical Name: 5-methoxy-2-(4-methoxy-3,5-dimethyl-2-methylenepyridin-1(2H)-yl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 44
CAT No: CL-OPS-NO-44 CAS No: NA Mol Wt: 312.323 Mol F: C16H16N4O3 Inv Status: Custom Synthesis
Chemical Name: 2-((3,5-dimethylpyridin-2-yl)methoxy)-5-methoxy-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 45
CAT No: CL-OPS-NO-45 CAS No: NA Mol Wt: 328.323 Mol F: C16H16N4O4 Inv Status: Custom Synthesis
Chemical Name: 2-(((6-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)oxy)methyl)-3,5-dimethylpyridin-4-ol
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N-Nitroso Omeprazole impurity 46
CAT No: CL-OPS-NO-46 CAS No: NA Mol Wt: 207.186 Mol F: C9H9N3O3 Inv Status: Custom Synthesis
Chemical Name: (5-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)methanol
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N-Nitroso Omeprazole impurity 47
CAT No: CL-OPS-NO-47 CAS No: NA Mol Wt: 356.332 Mol F: C17H16N4O5+ Inv Status: Custom Synthesis
Chemical Name: 2-acetyl-4-methoxy-1-(6-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)-3,5-dimethylpyridin-1-ium
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N-Nitroso Omeprazole impurity 48
CAT No: CL-OPS-NO-48 CAS No: NA Mol Wt: 356.4 Mol F: C17H16N4O3S Inv Status: Custom Synthesis
Chemical Name: (6-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)(4-methoxy-3,5-dimethylpyridin-2-yl)methanethione
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N-Nitroso Omeprazole impurity 49
CAT No: CL-OPS-NO-49 CAS No: NA Mol Wt: 239.185 Mol F: C9H9N3O5 Inv Status: Custom Synthesis
Chemical Name: N-(4-methoxy-2-nitrophenyl)-N-nitrosoacetamide
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N-Nitroso Omeprazole impurity 50
CAT No: CL-OPS-NO-50 CAS No: NA Mol Wt: 344.388 Mol F: C16H16N4O3S Inv Status: Custom Synthesis
Chemical Name: 2-(((6-methoxy-1-nitroso-1H-benzo[d]imidazol-2-yl)thio)methyl)-3,5-dimethylpyridin-4-ol
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N-Nitroso Omeprazole impurity 51
CAT No: CL-OPS-NO-51 CAS No: NA Mol Wt: 360.388 Mol F: C16H16N4O4S Inv Status: Custom Synthesis
Chemical Name: 2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazol-5-ol
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N-Nitroso Omeprazole impurity 52
CAT No: CL-OPS-NO-52 CAS No: NA Mol Wt: 312.323 Mol F: C16H16N4O3 Inv Status: Custom Synthesis
Chemical Name: 6-methoxy-2-(4-methoxy-3,5-dimethylpyridin-2-yl)-1-nitroso-1H-benzo[d]imidazole
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N-Nitroso Omeprazole impurity 53
CAT No: CL-OPS-NO-53 CAS No: NA Mol Wt: 360.388 Mol F: C16H16N4O4S Inv Status: Custom Synthesis
Chemical Name:  5-methoxy-2-(((4-methoxy-3-methylpyridin-2-yl)methyl)sulfinyl)-1-nitroso-1H-benzo[d]imidazole

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