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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

Itraconazole Methoxy Phenoxy Impurity chemical structure

Itraconazole Methoxy Phenoxy Impurity

CAS: 74853-06-8
Formula: C₂₄H₂₅N₃O₃
MW: 403.5 g/mol

VQ-035148

Reference Standard

Itraconazole Methoxy Triazolone Impurity chemical structure

Itraconazole Methoxy Triazolone Impurity

CAS: 74853-07-9
Formula: C₁₉H₂₁N₅O₂
MW: 351.4 g/mol

VQ-031312

Reference Standard

Ivabradine Acetyl analogue chemical structure

Ivabradine Acetyl analogue

CAS: 2512206-14-1
Formula: C₁₄H₁₉NO₃
MW: 249.3 g/mol

VQ-031317

Reference Standard

Ivabradine Amine Impurity chemical structure

Ivabradine Amine Impurity

CAS: 85175-77-5
Formula: C₁₆H₂₄N₂O₃
MW: 292.37 g/mol

VQ-048725

Reference Standard

Ivabradine Dimer Impurity

Ivabradine Dimer Impurity

CAS: 1807811-12-6
Formula: C₂₇H₃₈N₂O₄
MW: 454.6 g/mol

VQ-048726

Reference Standard

Ivabradine Impurity 15

Ivabradine Impurity 15

CAS: 1552361-50-8
Formula: C₁₈H₂₆ClNO₃
MW: 339.86 g/mol

VQ-048728

Reference Standard

Ivabradine Impurity 51 chemical structure

Ivabradine Impurity 51

CAS: 20925-64-8
Formula: C₁₂H₁₅NO₃
MW: 221.25 g/mol

VQ-037779

Reference Standard

Ivabradine Impurity 58 chemical structure

Ivabradine Impurity 58

CAS: 41234-20-2
Formula: C₁₂H₁₂BrNO₄
MW: 314.13 g/mol

VQ-037783

Reference Standard

Ivabradine Impurity 59 chemical structure

Ivabradine Impurity 59

CAS: 14773-42-3
Formula: C₁₁H₁₇NO₂
MW: 195.26 g/mol

VQ-037784

Reference Standard

Ivabradine Impurity 60 chemical structure

Ivabradine Impurity 60

CAS: 69089-12-9
Formula: C₁₁H₁₆BrNO₂
MW: 274.15 g/mol

VQ-048727

Reference Standard

Ivabradine Impurity 9 chemical structure

Ivabradine Impurity 9

CAS: 869856-10-0
Formula: C₁₄H₁₉NO₄
MW: 265.3 g/mol

VQ-037786

Reference Standard

Ivabradine iodo impurity chemical structure

Ivabradine iodo impurity

CAS: 148870-57-9
Formula: C₁₅H₁₈INO₃
MW: 387.21 g/mol

VQ-031323

Reference Standard

Ivabradine Open Ring chemical structure

Ivabradine Open Ring

CAS: 1462470-54-7
Formula: C₂₇H₃₈N₂O₆
MW: 486.6 g/mol

VQ-022890

Reference Standard

Ivacaftor 4-Quinolone-3-carboxylic acid Ester Impurity chemical structure

Ivacaftor 4-Quinolone-3-carboxylic acid Ester Impurity

CAS: 2760759-55-3
Formula: C₃₄H₃₃N₃O₅
MW: 563.6 g/mol

VQ-037791

Reference Standard

Ivacaftor Amine impurity chemical structure

Ivacaftor Amine impurity

CAS: 2760759-58-6
Formula: C₂₄H₂₈N₂O₃
MW: 392.5 g/mol

VQ-031339

Reference Standard

Ivacaftor Carboxylic Acid chemical structure

Ivacaftor Carboxylic Acid

CAS: 1246213-24-0
Formula: C₂₄H₂₆N₂O₅
MW: 422.5 g/mol

VQ-031336

Reference Standard

Ivacaftor Impurity-A

Ivacaftor Impurity-A

Formula: C₂₀H₂₀N₂O₃
MW: 336.39 g/mol

In stock

Reference Standard

Ivacaftor Malonate Impurity chemical structure

Ivacaftor Malonate Impurity

CAS: 54535-22-7
Formula: C₁₄H₁₇NO₄
MW: 263.29 g/mol

VQ-031340

Reference Standard

Ivosidenib Impurity 1

Ivosidenib Impurity 1

Formula: C₁₈H₁₅ClFN₃O₄
MW: 391.78 g/mol

In stock

Reference Standard

Ivosidenib Impurity 2

Ivosidenib Impurity 2

Formula: C₂₄H₁₇ClFN₅O₄
MW: 493.84 g/mol

In stock

Reference Standard

Ivosidenib Isonicotinamide Impurity chemical structure

Ivosidenib Isonicotinamide Impurity

CAS: 2408269-64-5
Formula: C₂₈H₂₄ClF₃N₆O₄
MW: 601 g/mol

In stock

Reference Standard

Ixazomib Impurity 1 chemical structure

Ixazomib Impurity 1

CAS: 1201903-02-7
Formula: C₂₄H₃₃BCl₂N₂O₄
MW: 495.2 g/mol

VQ-031356

Reference Standard

Kaempferol 3-O-Galactoside chemical structure

Kaempferol 3-O-Galactoside

CAS: 23627-87-4
Formula: C₂₁H₂₀O₁₁
MW: 448.4 g/mol

VQ-037798

Reference Standard

Kanamycin A chemical structure

CAS: 59-01-8
Formula: C₁₈H₃₆N₄O₁₁
MW: 484.5 g/mol

VQ-022899

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