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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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COA + SDSwith every lot

Reference Standard

Milbemycin Oxime chemical structure

Milbemycin Oxime

CAS: 129496-10-2
Formula: C₆₃H₈₈N₂O₁₄
MW: 1097.4 g/mol

VQ-031902

Reference Standard

Milnacipran Impurity 4

Milnacipran Impurity 4

CAS: 1623020-56-3
Formula: C₁₉H₁₅NO₄
MW: 321.33 g/mol

VQ-049116

Reference Standard

Milrinone IMpurity 2 chemical structure

Milrinone IMpurity 2

CAS: 400063-10-7
Formula: C₁₂H₇N₃O₂
MW: 225.2 g/mol

VQ-045334

Reference Standard

Minocycline 9-Methylamino Impurity chemical structure

Minocycline 9-Methylamino Impurity

CAS: 607402-73-3
Formula: C₂₄H₃₀N₄O₇
MW: 486.5 g/mol

VQ-026713

Reference Standard

Minocycline Amino Ethyl Derivative chemical structure

Minocycline Amino Ethyl Derivative

CAS: 4756-93-8
Formula: C₂₃H₂₇N₃O₇
MW: 457.5 g/mol

VQ-031929

Reference Standard

Minocycline Impurity 39

Minocycline Impurity 39

CAS: 2250181-30-5
Formula: C₃₂H₃₂N₄O₉
MW: 616.63 g/mol

VQ-045010

Reference Standard

Minocycline Impurity 40 chemical structure

Minocycline Impurity 40

CAS: 1075171-51-5
Formula: C₅₀H₄₂N₆O₁₃
MW: 934.9 g/mol

VQ-031928

Reference Standard

Minocycline Impurity 42 chemical structure

Minocycline Impurity 42

CAS: 835877-68-4
Formula: C₂₅H₃₃N₅O₇
MW: 515.6 g/mol

VQ-049312

Reference Standard

Minodronic Acid Impurity 9 chemical structure

Minodronic Acid Impurity 9

CAS: 2303523-19-3
Formula: C₁₈H₂₀N₄O₁₂P₄
MW: 608.3 g/mol

VQ-049122

Reference Standard

Minoxidil Dichloropyrimidine-3-oxide Impurity chemical structure

Minoxidil Dichloropyrimidine-3-oxide Impurity

CAS: 35139-68-5
Formula: C₄H₄Cl₂N₄O
MW: 195 g/mol

VQ-026715

Reference Standard

Minoxidil Pyrimidinone Impurity chemical structure

Minoxidil Pyrimidinone Impurity

CAS: 3739-81-9
Formula: C₅H₆N₂O
MW: 110.11 g/mol

VQ-026717

Reference Standard

Mirabegron (Stage-II)(Hydrolysis) chemical structure

Mirabegron (Stage-II)(Hydrolysis)

CAS: 89336-46-9
Formula: C₁₀H₁₄N₂O₄S
MW: 258.3 g/mol

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Reference Standard

Mirabegron (Undesired-Final)

Mirabegron (Undesired-Final)

Formula: C₂₆H₂₈N₆O₃S₂
MW: 536.67 g/mol

In stock

Reference Standard

Mirabegron (Undesired-Stage-V)(n-1)

Mirabegron (Undesired-Stage-V)(n-1)

Formula: C₃₁H₃₆N₆O₅S₂
MW: 636.79 g/mol

VQ-005281

Reference Standard

Mirabegron Di-Amide Impurity-2(stage-I)

Mirabegron Di-Amide Impurity-2(stage-I)

CAS: 82548-78-5
Formula: C₁₂H₁₈N₂O₄S
MW: 286.35 g/mol

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Reference Standard

Mirabegron Di-Amide Impurity-2(stage-III)

Mirabegron Di-Amide Impurity-2(stage-III)

CAS: 216658-05-8
Formula: C₁₇H₂₂N₄O₅S₂
MW: 426.51 g/mol

In stock

Reference Standard

Mirabegron Diamide Impurity 2(Stage-IV) Hydrolysis

Mirabegron Diamide Impurity 2(Stage-IV) Hydrolysis

Formula: C₁₅H₁₈N₄O₅S₂
MW: 398.46 g/mol

In stock

Reference Standard

Mirabegron Impurity chemical structure

Mirabegron Impurity

CAS: 33176-41-9
Formula: C₅H₆N₂O₃S
MW: 174.18 g/mol

VQ-049130

Reference Standard

Mirabegron Impurity 1 chemical structure

Mirabegron Impurity 1

CAS: 1684452-83-2
Formula: C₂₆H₂₈N₆O₃S₂
MW: 536.7 g/mol

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Reference Standard

Mirabegron Impurity 22

Mirabegron Impurity 22

CAS: 2798946-71-9
Formula: C₃₂H₃₆N₄O₃
MW: 524.7 g/mol

VQ-038426

Reference Standard

Mirabegron Impurity 31 chemical structure

Mirabegron Impurity 31

CAS: 1154949-80-0
Formula: C₁₆H₁₈N₂O₂
MW: 270.33 g/mol

VQ-005286

Reference Standard

Mirabegron Impurity 31 (Hydrochloride)

Mirabegron Impurity 31 (Hydrochloride)

CAS: 1581285-28-0
Formula: C₁₆H₁₈N₂O₂.ClH
MW: 306.79 g/mol

In stock

Reference Standard

Mirabegron Impurity 34 chemical structure

Mirabegron Impurity 34

CAS: 1684452-84-3
Formula: C₃₁H₃₂N₈O₄S₃
MW: 676.8 g/mol

VQ-031938

Reference Standard

Mirabegron Impurity 44 chemical structure

Mirabegron Impurity 44

CAS: 32897-26-0
Formula: C₈H₁₉N₃O
MW: 173.26 g/mol

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