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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-Formylvinamidine

N-Formylvinamidine

CAS: 1889298-61-6
Formula: C₄₆H₅₄N₄O₁₁
MW: 838.96 g/mol

VQ-034637

Reference Standard

N-Glycidyl Phthalimide chemical structure

N-Glycidyl Phthalimide

CAS: 5455-98-1
Formula: C₁₁H₉NO₃
MW: 203.19 g/mol

VQ-041948

Reference Standard

N-Isopropyl Carvedilol chemical structure

N-Isopropyl Carvedilol

CAS: 1246819-01-1
Formula: C₂₇H₃₂N₂O₄
MW: 448.6 g/mol

VQ-022041

Reference Standard

N-Isopropyl Tadalafil chemical structure

N-Isopropyl Tadalafil

CAS: 171596-30-8
Formula: C₂₄H₂₃N₃O₄
MW: 417.5 g/mol

VQ-042341

Reference Standard

N-Isopropyl-2-methyl-2-propyl-3-hydroxypropyl Carbamate chemical structure

N-Isopropyl-2-methyl-2-propyl-3-hydroxypropyl Carbamate

CAS: 25462-17-3
Formula: C₁₁H₂₃NO₃
MW: 217.31 g/mol

VQ-024811

Reference Standard

N-Isopropyldopamine chemical structure

N-Isopropyldopamine

CAS: 3506-32-9
Formula: C₁₁H₁₇NO₂
MW: 195.26 g/mol

VQ-048711

Reference Standard

N-Lactosyl Hydrochlorothiazide Impurity

N-Lactosyl Hydrochlorothiazide Impurity

CAS: 289907-38-6
Formula: C₁₉H₂₈ClN₃O₁₄S₂
MW: 622.02 g/mol

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Reference Standard

N-Methoxy-N,2-dimethyl-2-phenylpropanamide chemical structure

N-Methoxy-N,2-dimethyl-2-phenylpropanamide

CAS: 169280-16-4
Formula: C₁₂H₁₇NO₂
MW: 207.27 g/mol

VQ-047589

Reference Standard

N-Methyl Acamprosate chemical structure

N-Methyl Acamprosate

CAS: 741659-31-4
Formula: C₆H₁₂NO₄S-
MW: 194.23 g/mol

VQ-020710

Reference Standard

N-Methyl Adrenalone Hydrochloride chemical structure

N-Methyl Adrenalone Hydrochloride

CAS: 16899-83-5
Formula: C₁₀H₁₄ClNO₃
MW: 231.67 g/mol

VQ-029038

Reference Standard

N-Methyl Atomoxetine chemical structure

N-Methyl Atomoxetine

CAS: 83015-25-2
Formula: C₁₈H₂₃NO
MW: 269.4 g/mol

VQ-035824

Reference Standard

N-Methyl Carvedilol chemical structure

N-Methyl Carvedilol

CAS: 72956-35-5
Formula: C₂₅H₂₈N₂O₄
MW: 420.5 g/mol

VQ-029671

Reference Standard

N-Methyl Carvedilol Hydrochloride chemical structure

N-Methyl Carvedilol Hydrochloride

CAS: 1346599-33-4
Formula: C₂₅H₂₉ClN₂O₄
MW: 457 g/mol

VQ-036173

Reference Standard

N-Methyl Deoxygalactonojirimycin chemical structure

N-Methyl Deoxygalactonojirimycin

CAS: 141206-22-6
Formula: C₇H₁₅NO₄
MW: 177.2 g/mol

VQ-035329

Reference Standard

N-Methyl Duloxetine chemical structure

N-Methyl Duloxetine

CAS: 132335-46-7
Formula: C₁₉H₂₁NOS
MW: 311.4 g/mol

VQ-030336

Reference Standard

N-Methyl Esomeprazole Isomer-1 chemical structure

N-Methyl Esomeprazole Isomer-1

CAS: 1820041-19-7
Formula: C₁₈H₂₁N₃O₃S
MW: 359.4 g/mol

VQ-025616

Reference Standard

N-Methyl Etodolac chemical structure

N-Methyl Etodolac

CAS: 849630-94-0
Formula: C₁₈H₂₃NO₃
MW: 301.4 g/mol

VQ-030620

Reference Standard

N-Methyl Fluoxetine Hydrochloride chemical structure

N-Methyl Fluoxetine Hydrochloride

CAS: 885101-12-2
Formula: C₁₈H₂₁ClF₃NO
MW: 359.8 g/mol

VQ-022685

Reference Standard

N-Methyl Iminostilbene chemical structure

N-Methyl Iminostilbene

CAS: 52249-32-8
Formula: C₁₅H₁₃N
MW: 207.27 g/mol

VQ-031175

Reference Standard

N-Methyl Iso Desloratadine chemical structure

N-Methyl Iso Desloratadine

CAS: 183198-48-3
Formula: C₂₀H₂₁ClN₂
MW: 324.8 g/mol

VQ-036635

Reference Standard

N-Methyl Lenacapavir

N-Methyl Lenacapavir

CAS: 2939763-16-1
Formula: C₄₀H₃₄ClF₁₀N₇O₅S₂
MW: 982.3 g/mol

VQ-026394

Reference Standard

N-Methyl Maprotiline Hydrochloride chemical structure

N-Methyl Maprotiline Hydrochloride

CAS: 23941-45-9
Formula: C₂₁H₂₆ClN
MW: 327.9 g/mol

VQ-038256

Reference Standard

N-Methyl N-benzyl aminoacetaldehyde chemical structure

N-Methyl N-benzyl aminoacetaldehyde

CAS: 166947-11-1
Formula: C₁₀H₁₃NO
MW: 163.22 g/mol

VQ-033518

Reference Standard

N-Methyl Omeprazole Impurity (Mixture of N-Methyl 5-Methoxy & N-Methyl 6-Methoxy Analog) chemical structure

N-Methyl Omeprazole Impurity (Mixture of N-Methyl 5-Methoxy & N-Methyl 6-Methoxy Analog)

CAS: 89352-76-1
Formula: C₁₈H₂₁N₃O₃S
MW: 359.4 g/mol

VQ-005311

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