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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

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Reference Standard

N-Acetyl-O-methyl-D-serine chemical structure

N-Acetyl-O-methyl-D-serine

CAS: 196601-67-9
Formula: C₆H₁₁NO₄
MW: 161.16 g/mol

VQ-037850

Reference Standard

N-Acetyl-O-methylserine chemical structure

N-Acetyl-O-methylserine

CAS: 98632-99-6
Formula: C₆H₁₁NO₄
MW: 161.16 g/mol

VQ-037847

Reference Standard

N-Acetyl-O-methylserine chemical structure

N-Acetyl-O-methylserine

CAS: 65022-11-9
Formula: C₆H₁₁NO₄
MW: 161.16 g/mol

VQ-048772

Reference Standard

N-Acetyl-S-(3-oxopropyl)-L-cysteine chemical structure

N-Acetyl-S-(3-oxopropyl)-L-cysteine

CAS: 140226-30-8
Formula: C₈H₁₃NO₄S
MW: 219.26 g/mol

VQ-044560

Reference Standard

N-Acetyl-S-Phenyl-L-Cysteine chemical structure

N-Acetyl-S-Phenyl-L-Cysteine

CAS: 4775-80-8
Formula: C₁₁H₁₃NO₃S
MW: 239.29 g/mol

VQ-039121

Reference Standard

N-Acetyl-S-propionyl-L-cysteine

N-Acetyl-S-propionyl-L-cysteine

CAS: 7280-90-2
Formula: C₈H₁₃NO₄S
MW: 219.26 g/mol

VQ-029012

Reference Standard

N-Acetylcytidine triacetate chemical structure

N-Acetylcytidine triacetate

CAS: 5040-18-6
Formula: C₁₇H₂₁N₃O₉
MW: 411.4 g/mol

VQ-036491

Reference Standard

N-Acetylpiperazine-N'-(4-phenol) Ketoconazole chemical structure

N-Acetylpiperazine-N'-(4-phenol) Ketoconazole

CAS: 1346598-39-7
Formula: C₃₈H₄₂Cl₂N₆O₆
MW: 749.7 g/mol

VQ-031367

Reference Standard

N-Alkyl Aripiprazole chemical structure

N-Alkyl Aripiprazole

CAS: 1424857-63-5
Formula: C₃₆H₄₂Cl₂N₄O₄
MW: 665.6 g/mol

VQ-020826

Reference Standard

N-Alkyl Brexpiprazole chemical structure

N-Alkyl Brexpiprazole

CAS: 2094559-58-5
Formula: C₃₈H₄₀N₄O₄S
MW: 648.8 g/mol

VQ-021870

Reference Standard

N-Alkyl Lercanidipine

N-Alkyl Lercanidipine

CAS: 2809397-49-5
Formula: C₃₆H₄₁N₃O₆
MW: 611.74 g/mol

VQ-044372

Reference Standard

N-Allylphenothiazine chemical structure

N-Allylphenothiazine

CAS: 20962-92-9
Formula: C₁₅H₁₃NS
MW: 239.3 g/mol

VQ-041443

Reference Standard

N-Aminocarbonyl Felbamate chemical structure

N-Aminocarbonyl Felbamate

CAS: 1797130-34-7
Formula: C₁₂H₁₅N₃O₅
MW: 281.26 g/mol

VQ-025745

Reference Standard

N-Benzhydryl-n,n-dimethylamine chemical structure

N-Benzhydryl-n,n-dimethylamine

CAS: 5336-72-1
Formula: C₁₅H₁₇N
MW: 211.3 g/mol

VQ-032495

Reference Standard

N-Benzyl (-)-Nebivolol chemical structure

N-Benzyl (-)-Nebivolol

CAS: 1199945-26-0
Formula: C₂₉H₃₁F₂NO₄
MW: 495.6 g/mol

VQ-026848

Reference Standard

N-Benzyl 4-phenyl Butanamine chemical structure

N-Benzyl 4-phenyl Butanamine

CAS: 129951-06-0
Formula: C₁₇H₂₁N
MW: 239.35 g/mol

VQ-033752

Reference Standard

N-Benzyl Fluoro Aniline chemical structure

N-Benzyl Fluoro Aniline

CAS: 370-77-4
Formula: C₁₃H₁₂FN
MW: 201.24 g/mol

VQ-048326

Reference Standard

N-Benzyl Formamide chemical structure

N-Benzyl Formamide

CAS: 6343-54-0
Formula: C₈H₉NO
MW: 135.16 g/mol

VQ-043998

Reference Standard

N-Benzyl Medetomidine chemical structure

N-Benzyl Medetomidine

CAS: 2250242-52-3
Formula: C₂₀H₂₂N₂
MW: 290.4 g/mol

VQ-034823

Reference Standard

N-Benzyl Metaxalone chemical structure

N-Benzyl Metaxalone

CAS: 2385457-74-7
Formula: C₁₉H₂₁NO₃
MW: 311.4 g/mol

VQ-043223

Reference Standard

N-Benzyl Vinyl Analog Medetomidine chemical structure

N-Benzyl Vinyl Analog Medetomidine

CAS: 2250243-56-0
Formula: C₂₀H₂₀N₂
MW: 288.4 g/mol

VQ-026581

Reference Standard

N-Benzyl-4-carboethoxypiperidine chemical structure

N-Benzyl-4-carboethoxypiperidine

CAS: 24228-40-8
Formula: C₁₅H₂₁NO₂
MW: 247.33 g/mol

VQ-032591

Reference Standard

N-Benzyl-Linoleamide chemical structure

N-Benzyl-Linoleamide

CAS: 18286-71-0
Formula: C₂₅H₃₉NO
MW: 369.6 g/mol

VQ-048999

Reference Standard

N-Benzyl-N-(2,2-dimethoxyethyl)-2,2-dimethoxyethanamine chemical structure

N-Benzyl-N-(2,2-dimethoxyethyl)-2,2-dimethoxyethanamine

CAS: 304690-43-5
Formula: C₁₅H₂₅NO₄
MW: 283.36 g/mol

VQ-041607

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