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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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1,516in stock

COA + SDSwith every lot

Reference Standard

Mitoxantrone impurity A HCl chemical structure

Mitoxantrone impurity A HCl

CAS: 89991-54-8
Formula: C₁₈H₂₀ClN₃O₅
MW: 393.8 g/mol

VQ-044403

Reference Standard

Mivacurium Impurity 9 chemical structure

Mivacurium Impurity 9

CAS: 586959-47-9
Formula: C₂₅H₃₆ClNO₆
MW: 482 g/mol

VQ-049143

Reference Standard

MK-4618 Pyrimidinone Acid Sodium Salt chemical structure

MK-4618 Pyrimidinone Acid Sodium Salt

CAS: 1421271-01-3
Formula: C₈H₇N₂NaO₃
MW: 202.14 g/mol

VQ-028692

Reference Standard

MOC-POC Tenofovir chemical structure

MOC-POC Tenofovir

CAS: 1246812-43-0
Formula: C₁₇H₂₆N₅O₁₀P
MW: 491.4 g/mol

VQ-043317

Reference Standard

Modafinil - Impurity C chemical structure

Modafinil - Impurity C

CAS: 63547-25-1
Formula: C₁₆H₁₆O₃S
MW: 288.4 g/mol

VQ-034869

Reference Standard

Modafinil Carboxylate Sulfone chemical structure

Modafinil Carboxylate Sulfone

CAS: 101094-05-7
Formula: C₁₅H₁₄O₄S
MW: 290.3 g/mol

VQ-043624

Reference Standard

Moexipril Related Compound D Hydrochloride chemical structure

Moexipril Related Compound D Hydrochloride

CAS: 1356058-19-9
Formula: C₂₇H₄₀N₂O₇
MW: 504.6 g/mol

VQ-049151

Reference Standard

Moexipril tert-Butyl ester maleic acid salt chemical structure

Moexipril tert-Butyl ester maleic acid salt

CAS: 103733-40-0
Formula: C₃₅H₄₆N₂O₁₁
MW: 670.7 g/mol

VQ-031964

Reference Standard

Moexiprilat chemical structure

CAS: 103775-14-0
Formula: C₂₅H₃₀N₂O₇
MW: 470.5 g/mol

VQ-026750

Reference Standard

Molindone Impurity C chemical structure

Molindone Impurity C

CAS: 6116-76-3
Formula: C₁₁H₁₅NO
MW: 177.24 g/mol

VQ-038470

Reference Standard

Molindone Impurity D chemical structure

Molindone Impurity D

CAS: 22770-60-1
Formula: C₁₂H₁₅NO
MW: 189.25 g/mol

VQ-026751

Reference Standard

Molnupiravir Acetyl Impurity

Molnupiravir Acetyl Impurity

Formula: C₁₁H₁₅N₃O₇
MW: 301.25 g/mol

In stock

Reference Standard

Molnupiravir Acetyl Impurity chemical structure

Molnupiravir Acetyl Impurity

CAS: 29569-30-0
Formula: C₁₁H₁₅N₃O₇
MW: 301.25 g/mol

VQ-049154

Reference Standard

Molnupiravir Impurity 12 chemical structure

Molnupiravir Impurity 12

CAS: 2346620-54-8
Formula: C₁₈H₂₃N₅O₆
MW: 405.4 g/mol

VQ-049153

Reference Standard

Molnupiravir Impurity A

Molnupiravir Impurity A

Formula: C₁₆H₂₃N₃O₇
MW: 369.37 g/mol

In stock

Reference Standard

Molnupiravir Impurity E chemical structure

Molnupiravir Impurity E

CAS: 362-42-5
Formula: C₁₂H₁₇N₃O₅
MW: 283.28 g/mol

In stock

Reference Standard

Molnupiravir Impurity F chemical structure

Molnupiravir Impurity F

CAS: 1686124-74-2
Formula: C₁₆H₂₃N₃O₆
MW: 353.37 g/mol

In stock

Reference Standard

Molnupiravir Impurity H

Molnupiravir Impurity H

Formula: C₂₀H₂₉N₃O₇
MW: 423.46 g/mol

In stock

Reference Standard

Molnupiravir Impurity I chemical structure

Molnupiravir Impurity I

CAS: 2770244-32-9
Formula: C₁₃H₁₉N₃O₇
MW: 329.31 g/mol

In stock

Reference Standard

Molsidomine Impurity B chemical structure

Molsidomine Impurity B

CAS: 59-89-2
Formula: C₄H₈N₂O₂
MW: 116.12 g/mol

In stock

Reference Standard

Momelotinib Impurity 12

Momelotinib Impurity 12

CAS: 102078-13-7
Formula: C₂₀H₁₈O₅
MW: 338.35 g/mol

VQ-038474

Reference Standard

Momelotinib Impurity 3 chemical structure

Momelotinib Impurity 3

CAS: 2641608-74-2
Formula: C₂₃H₂₀N₆O₄
MW: 444.4 g/mol

In stock

Reference Standard

Momelotinib Impurity 4 chemical structure

Momelotinib Impurity 4

CAS: 247234-41-9
Formula: C₁₁H₁₆N₄O
MW: 220.27 g/mol

VQ-049155

Reference Standard

Mometasone Furoate - Impurity N chemical structure

Mometasone Furoate - Impurity N

CAS: 352315-75-4
Formula: C₂₃H₃₁ClO₇S
MW: 487 g/mol

VQ-031980

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