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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

Lurasidone Opened Imide (Mixture of Diastereomers) chemical structure

Lurasidone Opened Imide (Mixture of Diastereomers)

CAS: 1644295-07-7
Formula: C₂₈H₃₈N₄O₃S
MW: 510.7 g/mol

VQ-026543

Reference Standard

Lurasidone Sulfone chemical structure

Lurasidone Sulfone

CAS: 1807607-99-3
Formula: C₂₈H₃₆N₄O₄S
MW: 524.7 g/mol

VQ-034862

Reference Standard

Lycoramine chemical structure

CAS: 21133-52-8
Formula: C₁₇H₂₃NO₃
MW: 289.4 g/mol

VQ-022740

Reference Standard

Lypressin chemical structure

CAS: 50-57-7
Formula: C₄₆H₆₅N₁₃O₁₂S₂
MW: 1056.2 g/mol

VQ-038227

Reference Standard

Lys-(Ac)5 Lanreotide

Lys-(Ac)5 Lanreotide

CAS: 1353092-24-6
Formula: C₅₆H₇₁N₁₁O₁₁S₂
MW: 1138.36 g/mol

VQ-026353

Reference Standard

Lys-SMCC-DM1 chemical structure

CAS: 1281816-04-3
Formula: C₅₃H₇₅ClN₆O₁₅S
MW: 1103.7 g/mol

VQ-031792

Reference Standard

Lysine Clonixinate chemical structure

Lysine Clonixinate

CAS: 55837-30-4
Formula: C₁₉H₂₅ClN₄O₄
MW: 408.9 g/mol

VQ-031703

Reference Standard

m-Cresol-4-Sulfonic Acid Ammonium chemical structure

m-Cresol-4-Sulfonic Acid Ammonium

CAS: 2742982-16-5
Formula: C₇H₁₁NO₄S
MW: 205.23 g/mol

VQ-035720

Reference Standard

M-Methyl Piperizene Impurity chemical structure

M-Methyl Piperizene Impurity

CAS: 112811-58-2
Formula: C₁₉H₂₂FN₃O₄
MW: 375.4 g/mol

VQ-038518

Reference Standard

MABA Acid (Stage-1) chemical structure

MABA Acid (Stage-1)

CAS: 2528-30-5
Formula: C₁₆H₁₅NO₄
MW: 285.29 g/mol

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Reference Standard

MABA acid (Stage-1) Sodium Salt

MABA acid (Stage-1) Sodium Salt

CAS: 93960-24-8
Formula: C₁₆H₁₅NO₄.Na
MW: 308.28 g/mol

VQ-005255

Reference Standard

MABA Acid (Stage-2) chemical structure

MABA Acid (Stage-2)

CAS: 101810-82-6
Formula: C₂₃H₂₆N₂O₇
MW: 442.5 g/mol

In stock

Reference Standard

MABA Acid Ethyl Ester(R - Isomer) chemical structure

MABA Acid Ethyl Ester(R - Isomer)

CAS: 51865-66-8
Formula: C₁₇H₂₄N₂O₅
MW: 336.4 g/mol

In stock

Reference Standard

Macitentan ACT-373898 chemical structure

Macitentan ACT-373898

CAS: 1433875-14-9
Formula: C₁₅H₁₇BrN₄O₅S
MW: 445.3 g/mol

VQ-026550

Reference Standard

Macitentan Impurity C chemical structure

Macitentan Impurity C

CAS: 441798-36-3
Formula: C₁₉H₂₀BrClN₆O₄S
MW: 543.8 g/mol

VQ-023021

Reference Standard

Macitentan Impurity H chemical structure

Macitentan Impurity H

CAS: 2300968-85-6
Formula: C₁₉H₂₂N₆O₄S
MW: 430.5 g/mol

VQ-049000

Reference Standard

Macitentan n-butyl analogue chemical structure

Macitentan n-butyl analogue

CAS: 556797-16-1
Formula: C₂₀H₂₁Br₂N₅O₄S
MW: 587.3 g/mol

VQ-038238

Reference Standard

Macitentan Sulfamide Dimer chemical structure

Macitentan Sulfamide Dimer

CAS: 2089065-77-8
Formula: C₂₈H₃₂Br₂N₈O₆S₂
MW: 800.5 g/mol

VQ-021267

Reference Standard

Maduramicin Ammonium chemical structure

Maduramicin Ammonium

CAS: 84878-61-5
Formula: C₄₇H₈₃NO₁₇
MW: 934.2 g/mol

VQ-031710

Reference Standard

Malaoxon chemical structure

CAS: 1634-78-2
Formula: C₁₀H₁₉O₇PS
MW: 314.29 g/mol

VQ-027163

Reference Standard

Maltose chemical structure

CAS: 69-79-4
Formula: C₁₂H₂₂O₁₁
MW: 342.3 g/mol

VQ-038248

Reference Standard

Maltotriitol chemical structure

CAS: 32860-62-1
Formula: C₁₈H₃₄O₁₆
MW: 506.5 g/mol

VQ-031713

Reference Standard

Manidipine Impurity B chemical structure

Manidipine Impurity B

CAS: 89226-51-7
Formula: C₃₆H₄₀N₄O₆
MW: 624.7 g/mol

VQ-031716

Reference Standard

Maraviroc Dimer Impurity

Maraviroc Dimer Impurity

CAS: 2414312-13-1
Formula: C₄₅H₆₄N₁₀O
MW: 761.1 g/mol

VQ-049014

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