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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

Isolosartan Azide impurity

Isolosartan Azide impurity

CAS: 2755908-50-8
Formula: C₂₂H₂₂ClN₉
MW: 447.92 g/mol

In stock

Reference Standard

Isomalathion chemical structure

CAS: 3344-12-5
Formula: C₁₀H₁₉O₆PS₂
MW: 330.4 g/mol

VQ-031712

Reference Standard

Isomaltitol chemical structure

CAS: 534-73-6
Formula: C₁₂H₂₄O₁₁
MW: 344.31 g/mol

VQ-032721

Reference Standard

Isomannide Dinitrate chemical structure

Isomannide Dinitrate

CAS: 551-43-9
Formula: C₆H₈N₂O₈
MW: 236.14 g/mol

VQ-032472

Reference Standard

Isometheptane Mucate chemical structure

Isometheptane Mucate

CAS: 7492-31-1
Formula: C₂₄H₄₈N₂O₈
MW: 492.6 g/mol

VQ-031262

Reference Standard

Isometheptene Impurity 3 chemical structure

Isometheptene Impurity 3

CAS: 859444-64-7
Formula: C₁₁H₂₀O
MW: 168.28 g/mol

VQ-045327

Reference Standard

Isometheptene Impurity E chemical structure

Isometheptene Impurity E

CAS: 4436-89-9
Formula: C₉H₂₁NO
MW: 159.27 g/mol

VQ-037746

Reference Standard

Isoniazid Acetone adduct chemical structure

Isoniazid Acetone adduct

CAS: 4813-04-1
Formula: C₉H₁₁N₃O
MW: 177.2 g/mol

VQ-040052

Reference Standard

Isoniazid Ethylene Dimer Impurity at RRT 1.62

Isoniazid Ethylene Dimer Impurity at RRT 1.62

CAS: 27853-51-6
Formula: C₁₄H₁₆N₆O₂
MW: 300.32 g/mol

VQ-026236

Reference Standard

Isoniazid Impurity 1 chemical structure

Isoniazid Impurity 1

CAS: 15420-02-7
Formula: C₁₂H₈N₄O
MW: 224.22 g/mol

VQ-045328

Reference Standard

Isopenillic acid chemical structure

Isopenillic acid

CAS: 90962-63-3
Formula: C₁₆H₁₈N₂O₄S
MW: 334.4 g/mol

VQ-033099

Reference Standard

Isopilocarpine Hydrochloride chemical structure

Isopilocarpine Hydrochloride

CAS: 28958-85-2
Formula: C₁₁H₁₇ClN₂O₂
MW: 244.72 g/mol

VQ-033179

Reference Standard

Isopilocarpinic acid chemical structure

Isopilocarpinic acid

CAS: 34350-99-7
Formula: C₁₁H₁₈N₂O₃
MW: 226.27 g/mol

VQ-023489

Reference Standard

Isopimaric acid chemical structure

Isopimaric acid

CAS: 5835-26-7
Formula: C₂₀H₃₀O₂
MW: 302.5 g/mol

VQ-040893

Reference Standard

Isopimpinellin chemical structure

CAS: 482-27-9
Formula: C₁₃H₁₀O₅
MW: 246.21 g/mol

VQ-031268

Reference Standard

Isopropyl

CAS: 2468797-13-7
Formula: C₁₈H₂₂N₄O₅S
MW: 406.46 g/mol

VQ-031007

Reference Standard

Isopropyl

CAS: 2872586-94-0
Formula: C₃₂H₃₄F₄N₄O₄
MW: 614.64 g/mol

VQ-031498

Reference Standard

Isopropyl

CAS: 2459446-55-8
Formula: C₂₅H₂₉NO₄
MW: 407.5 g/mol

VQ-033729

Reference Standard

Isopropyl chemical structure

CAS: 733036-95-8
Formula: C₂₅H₃₅FO₅
MW: 434.5 g/mol

VQ-035071

Reference Standard

Isopropyl chemical structure

CAS: 733036-94-7
Formula: C₂₅H₃₅FO₅
MW: 434.5 g/mol

VQ-043762

Reference Standard

Isopropyl ((r)-((((r)-1-(6-amino-9h-purin-9-yl)propan-2-yl)oxy)methyl)(phenoxy)phosphoryl)-d-alaninate chemical structure

Isopropyl ((r)-((((r)-1-(6-amino-9h-purin-9-yl)propan-2-yl)oxy)methyl)(phenoxy)phosphoryl)-d-alaninate

CAS: 2053424-88-5
Formula: C₂₁H₂₉N₆O₅P
MW: 476.5 g/mol

VQ-042413

Reference Standard

Isopropyl ((R)-(perfluorophenoxy)(phenoxy)phosphoryl)-D-alaninate chemical structure

Isopropyl ((R)-(perfluorophenoxy)(phenoxy)phosphoryl)-D-alaninate

CAS: 1627824-09-2
Formula: C₁₈H₁₇F₅NO₅P
MW: 453.3 g/mol

VQ-033900

Reference Standard

Isopropyl (1S)-(+)-10-Camphorsulfate chemical structure

Isopropyl (1S)-(+)-10-Camphorsulfate

CAS: 247078-58-6
Formula: C₁₃H₂₂O₄S
MW: 274.38 g/mol

VQ-025928

Reference Standard

Isopropyl 2 2 6 dichlorophenyl acetate chemical structure

Isopropyl 2 2 6 dichlorophenyl acetate

CAS: 1470584-30-5
Formula: C₁₁H₁₂Cl₂O₂
MW: 247.11 g/mol

VQ-031038

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