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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

Linagliptin N-Formyl Impurity chemical structure

Linagliptin N-Formyl Impurity

CAS: 2137744-33-1
Formula: C₂₆H₂₈N₈O₃
MW: 500.6 g/mol

VQ-026473

Reference Standard

Linagliptin N,N'-Methylene Dimer chemical structure

Linagliptin N,N'-Methylene Dimer

CAS: 2489212-72-6
Formula: C₅₁H₅₆N₁₆O₄
MW: 957.1 g/mol

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Reference Standard

Linagliptin O-Alkyl Impurity chemical structure

Linagliptin O-Alkyl Impurity

CAS: 2514724-20-8
Formula: C₂₅H₂₈N₈O₂
MW: 472.5 g/mol

VQ-026480

Reference Standard

Linagliptin Phthalimido Dimer Impurity chemical structure

Linagliptin Phthalimido Dimer Impurity

CAS: 2074688-82-5
Formula: C₅₈H₅₈N₁₆O₆
MW: 1075.2 g/mol

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Reference Standard

Linagliptin Piperidine Impurity (TFA Salt)

Linagliptin Piperidine Impurity (TFA Salt)

Formula: C₃₁H₄₀N₁₀O₂.C₂F₃O
MW: 681.73 g/mol

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Reference Standard

Linagliptin quinazolin Dimer chemical structure

Linagliptin quinazolin Dimer

CAS: 2469626-53-5
Formula: C₃₀H₂₆N₈O₃
MW: 546.6 g/mol

VQ-031563

Reference Standard

Linagliptin Related Compound B chemical structure

Linagliptin Related Compound B

CAS: 668273-75-4
Formula: C₃₀H₃₆N₈O₄
MW: 572.7 g/mol

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Reference Standard

Linagliptin Related Compound B (Inhouse) chemical structure

Linagliptin Related Compound B (Inhouse)

CAS: 1573118-33-8
Formula: C₃₄H₃₂N₈O₄
MW: 616.7 g/mol

VQ-026476

Reference Standard

Linagliptin Trifluoro Acetyl Impurity chemical structure

Linagliptin Trifluoro Acetyl Impurity

CAS: 1673546-62-7
Formula: C₂₇H₂₇F₃N₈O₃
MW: 568.5 g/mol

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Reference Standard

Linagliptin-2-Regio Isomer(N-1 Stage)

Linagliptin-2-Regio Isomer(N-1 Stage)

Formula: C₃₀H₃₆N₈O₄
MW: 572.66 g/mol

VQ-005224

Reference Standard

Linagliptin-CD1065 (SR Isomer)

Linagliptin-CD1065 (SR Isomer)

Formula: C₃₈H₄₂N₁₀O₄
MW: 702.81 g/mol

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Reference Standard

Lincomycin 2-Palmitate Hydrochloride chemical structure

Lincomycin 2-Palmitate Hydrochloride

CAS: 23295-14-9
Formula: C₃₄H₆₅ClN₂O₇S
MW: 681.4 g/mol

VQ-031577

Reference Standard

Lincomycin Hydrochloride Impurity

Lincomycin Hydrochloride Impurity

CAS: 16727-66-5
Formula: C₂₁H₃₈N₂O₆S
MW: 446.6 g/mol

VQ-038058

Reference Standard

Lincomycin-B chemical structure

CAS: 2520-24-3
Formula: C₁₇H₃₂N₂O₆S
MW: 392.5 g/mol

VQ-031580

Reference Standard

Linear Daptomycin chemical structure

Linear Daptomycin

CAS: 883991-21-7
Formula: C₇₂H₁₀₃N₁₇O₂₇
MW: 1638.7 g/mol

VQ-043131

Reference Standard

Linezolid Acetate Impurity chemical structure

Linezolid Acetate Impurity

CAS: 496031-56-2
Formula: C₁₆H₁₉FN₂O₅
MW: 338.33 g/mol

VQ-038071

Reference Standard

Linezolid Benzyl Impurity chemical structure

Linezolid Benzyl Impurity

CAS: 168828-81-7
Formula: C₁₈H₁₉FN₂O₃
MW: 330.4 g/mol

In stock

Reference Standard

Linezolid Benzylamine Impurity

Linezolid Benzylamine Impurity

CAS: 1236077-61-4
Formula: C₂₁H₂₄FN₃O₃
MW: 385.43 g/mol

In stock

Reference Standard

Linezolid Chloro Impurity chemical structure

Linezolid Chloro Impurity

CAS: 496031-57-3
Formula: C₁₄H₁₆ClFN₂O₃
MW: 314.74 g/mol

In stock

Reference Standard

Linezolid Desacetamide Phthalimide (S)-Isomer chemical structure

Linezolid Desacetamide Phthalimide (S)-Isomer

CAS: 168828-89-5
Formula: C₂₂H₂₀FN₃O₅
MW: 425.4 g/mol

In stock

Reference Standard

Linezolid Descarboxy Imine Impurity chemical structure

Linezolid Descarboxy Imine Impurity

CAS: 1391062-33-1
Formula: C₁₅H₂₀FN₃O₂
MW: 293.34 g/mol

VQ-031588

Reference Standard

Linezolid Desfluoro Impurity chemical structure

Linezolid Desfluoro Impurity

CAS: 556801-15-1
Formula: C₁₆H₂₁N₃O₄
MW: 319.36 g/mol

In stock

Reference Standard

Linezolid Dimer chemical structure

Linezolid Dimer

CAS: 908143-04-4
Formula: C₃₀H₃₅F₂N₅O₇
MW: 615.6 g/mol

VQ-031584

Reference Standard

Linezolid Dimer Impurity 1

Linezolid Dimer Impurity 1

Formula: C₃₅H₃₉F₂N₅O₆
MW: 663.71 g/mol

VQ-005231

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