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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

Lorlatinib Acid Impurity chemical structure

Lorlatinib Acid Impurity

CAS: 1455009-85-4
Formula: C₂₁H₂₁FN₆O₃
MW: 424.4 g/mol

VQ-026508

Reference Standard

Lormetazepam impurity 1 chemical structure

Lormetazepam impurity 1

CAS: 5621-86-3
Formula: C₁₄H₁₁Cl₂NO
MW: 280.1 g/mol

VQ-038136

Reference Standard

Losartan Azide Impurity chemical structure

Losartan Azide Impurity

CAS: 727718-93-6
Formula: C₂₂H₂₂ClN₉
MW: 447.9 g/mol

VQ-005245

Reference Standard

Losartan Azide Nitrile chemical structure

Losartan Azide Nitrile

CAS: 2755908-48-4
Formula: C₂₂H₂₁ClN₆
MW: 404.9 g/mol

VQ-023006

Reference Standard

Losartan BCFI Chloro Impurity chemical structure

Losartan BCFI Chloro Impurity

CAS: 158365-99-2
Formula: C₇H₁₁ClN₂
MW: 158.63 g/mol

VQ-005246

Reference Standard

Losartan Dimer Azide

Losartan Dimer Azide

CAS: 2755908-51-9
Formula: C₄₄H₄₃Cl₂N₁₅
MW: 852.82 g/mol

VQ-038148

Reference Standard

Losartan Impurity 14 chemical structure

Losartan Impurity 14

CAS: 178554-16-0
Formula: C₂₅H₂₆N₆O₃
MW: 458.5 g/mol

VQ-048377

Reference Standard

Losartan Impurity 7

Losartan Impurity 7

CAS: 159448-66-5
Formula: C₈H₁₂Cl₂N₂
MW: 207.1 g/mol

VQ-048946

Reference Standard

Losartan Impurity K chemical structure

Losartan Impurity K

CAS: 1159977-26-0
Formula: C₂₁H₂₀Cl₂N₆
MW: 427.3 g/mol

VQ-048944

Reference Standard

Losartan Methyl Ether chemical structure

Losartan Methyl Ether

CAS: 114798-94-6
Formula: C₂₃H₂₅ClN₆O
MW: 436.9 g/mol

VQ-026522

Reference Standard

Losartan N1-Trityl Impurity chemical structure

Losartan N1-Trityl Impurity

CAS: 124751-00-4
Formula: C₄₁H₃₇ClN₆O
MW: 665.2 g/mol

VQ-031647

Reference Standard

Losartan Related Compound D chemical structure

Losartan Related Compound D

CAS: 212316-86-4
Formula: C₄₄H₄₃Cl₂KN₁₂O
MW: 865.9 g/mol

VQ-031643

Reference Standard

Losartan Related Compound E chemical structure

Losartan Related Compound E

CAS: 212316-88-6
Formula: C₄₄H₄₃Cl₂KN₁₂O
MW: 865.9 g/mol

VQ-031644

Reference Standard

Loteprednol etabonate 17-Carboxylic acid chemical structure

Loteprednol etabonate 17-Carboxylic acid

CAS: 133991-63-6
Formula: C₂₃H₃₀O₇
MW: 418.5 g/mol

VQ-026523

Reference Standard

Lotilaner Acid Impurity chemical structure

Lotilaner Acid Impurity

CAS: 1613733-74-6
Formula: C₁₆H₉Cl₃F₃NO₃S
MW: 458.7 g/mol

VQ-031658

Reference Standard

Lotilaner Glycine Acid Impurity

Lotilaner Glycine Acid Impurity

CAS: 2899249-63-7
Formula: C₁₈H₁₂Cl₃F₃N₂O₄S
MW: 515.71 g/mol

VQ-038163

Reference Standard

Lotilaner R-Isomer chemical structure

Lotilaner R-Isomer

CAS: 1369853-98-4
Formula: C₂₀H₁₄Cl₃F₆N₃O₃S
MW: 596.8 g/mol

VQ-031656

Reference Standard

Lovastatin Impurity 2

Lovastatin Impurity 2

CAS: 1002350-06-2
Formula: C₂₂H₂₈FN₃O₆S
MW: 481.54 g/mol

VQ-048965

Reference Standard

Loxoprofen Impurity 39 chemical structure

Loxoprofen Impurity 39

CAS: 2274853-20-0
Formula: C₁₈H₂₂O₅
MW: 318.4 g/mol

VQ-048971

Reference Standard

Luliconazole-Z-Isomer chemical structure

Luliconazole-Z-Isomer

CAS: 1240249-76-6
Formula: C₁₄H₉Cl₂N₃S₂
MW: 354.3 g/mol

VQ-031673

Reference Standard

Lumacaftor Amide chemical structure

Lumacaftor Amide

CAS: 2071254-53-8
Formula: C₁₁H₉F₂NO₃
MW: 241.19 g/mol

VQ-038186

Reference Standard

Lumacaftor pentanoyl impurity

Lumacaftor pentanoyl impurity

CAS: 2760759-54-2
Formula: C₂₈H₂₆F₂N₂O₄
MW: 492.52 g/mol

VQ-031677

Reference Standard

Lumateperone Impurity 11 chemical structure

Lumateperone Impurity 11

CAS: 313368-92-2
Formula: C₂₄H₂₈FN₃O
MW: 393.5 g/mol

In stock

Reference Standard

Lumateperone LIP-1A Impurity

Lumateperone LIP-1A Impurity

Formula: C₁₇H₂₁N₃O₃
MW: 315.37 g/mol

In stock

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