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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

Potassium Sorbate Cis,Cis Isomer

Potassium Sorbate Cis,Cis Isomer

CAS: 122093-58-7
Formula: C₆H₇KO₂
MW: 150.22 g/mol

VQ-041573

Reference Standard

Potassium tosylate chemical structure

Potassium tosylate

CAS: 16106-44-8
Formula: C₇H₇KO₃S
MW: 210.29 g/mol

VQ-048913

Reference Standard

Pralatrexate R-Isomer

Pralatrexate R-Isomer

CAS: 1451250-74-0
Formula: C₂₃H₂₃N₇O₅
MW: 477.47 g/mol

VQ-027564

Reference Standard

Pramipexole BTA Impurity chemical structure

Pramipexole BTA Impurity

CAS: 136-95-8
Formula: C₇H₆N₂S
MW: 150.2 g/mol

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Reference Standard

Pramipexole BTA Impurity (Hydrobromide)

Pramipexole BTA Impurity (Hydrobromide)

CAS: 84293-43-6
Formula: C₇H₆N₂S.BrH
MW: 231.11 g/mol

VQ-005635

Reference Standard

Pramipexole BTA Impurity (Hydrochloride) chemical structure

Pramipexole BTA Impurity (Hydrochloride)

CAS: 94787-08-3
Formula: C₇H₇ClN₂S
MW: 186.66 g/mol

VQ-005636

Reference Standard

Pramipexole C-N Dimer chemical structure

Pramipexole C-N Dimer

CAS: 1244656-98-1
Formula: C₂₀H₃₂N₆S₂
MW: 420.6 g/mol

VQ-041582

Reference Standard

Pramipexole Di-Amide chemical structure

Pramipexole Di-Amide

CAS: 1346617-47-7
Formula: C₁₃H₁₉N₃O₂S
MW: 281.38 g/mol

VQ-027569

Reference Standard

Pramipexole Dimer Impurity chemical structure

Pramipexole Dimer Impurity

CAS: 3018121-53-1
Formula: C₂₀H₃₂N₆S₂
MW: 420.6 g/mol

VQ-033276

Reference Standard

Pramoxine Hydrochloride Impurity C chemical structure

Pramoxine Hydrochloride Impurity C

CAS: 57616-74-7
Formula: C₇H₁₅Cl₂NO
MW: 200.1 g/mol

VQ-041590

Reference Standard

Pranlukast Chromene Carboxamide Impurity chemical structure

Pranlukast Chromene Carboxamide Impurity

CAS: 136450-10-7
Formula: C₂₇H₂₄N₂O₅
MW: 456.5 g/mol

VQ-033279

Reference Standard

Pranlukast Chromene Carboxylic Acid Impurity chemical structure

Pranlukast Chromene Carboxylic Acid Impurity

CAS: 211116-98-2
Formula: C₂₇H₂₃NO₆
MW: 457.5 g/mol

VQ-033278

Reference Standard

Prasterone enanthate chemical structure

Prasterone enanthate

CAS: 23983-43-9
Formula: C₂₆H₄₀O₃
MW: 400.6 g/mol

VQ-028983

Reference Standard

Prasugrel Acetyl Analog chemical structure

Prasugrel Acetyl Analog

CAS: 1443034-67-0
Formula: C₁₈H₁₈FNO₃S
MW: 347.4 g/mol

VQ-023522

Reference Standard

Prasugrel Acetyl Hydrochloride Impurity chemical structure

Prasugrel Acetyl Hydrochloride Impurity

CAS: 1151904-84-5
Formula: C₉H₁₂ClNO₂S
MW: 233.72 g/mol

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Reference Standard

Prasugrel Acetyl Impurity chemical structure

Prasugrel Acetyl Impurity

CAS: 1151904-85-6
Formula: C₉H₁₁NO₂S
MW: 197.26 g/mol

VQ-005638

Reference Standard

Prasugrel Bromo Ketone Impurity chemical structure

Prasugrel Bromo Ketone Impurity

CAS: 1373350-58-3
Formula: C₁₁H₁₁BrClFO
MW: 293.56 g/mol

VQ-041596

Reference Standard

Prasugrel Bromobutyryl Impurity chemical structure

Prasugrel Bromobutyryl Impurity

CAS: 1373350-59-4
Formula: C₂₀H₂₁BrFNO₃S
MW: 454.4 g/mol

VQ-027572

Reference Standard

Prasugrel Desacetyloxy Impurity chemical structure

Prasugrel Desacetyloxy Impurity

CAS: 201049-78-7
Formula: C₁₈H₁₈FNOS
MW: 315.4 g/mol

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Reference Standard

Prasugrel Dibromo Impurity chemical structure

Prasugrel Dibromo Impurity

CAS: 2091625-61-3
Formula: C₁₁H₉Br₂FO
MW: 335.99 g/mol

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Reference Standard

Prasugrel Diketone Impurity chemical structure

Prasugrel Diketone Impurity

CAS: 1391054-37-7
Formula: C₁₁H₉FO₂
MW: 192.19 g/mol

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Reference Standard

Prasugrel Hydrochloride Desacetyloxy Impurity chemical structure

Prasugrel Hydrochloride Desacetyloxy Impurity

CAS: 1618108-01-2
Formula: C₁₈H₁₉ClFNOS
MW: 351.9 g/mol

VQ-005642

Reference Standard

Prasugrel Impurity 14 Maleate chemical structure

Prasugrel Impurity 14 Maleate

CAS: 1373350-60-7
Formula: C₂₄H₂₅BrFNO₇S
MW: 570.4 g/mol

VQ-041594

Reference Standard

Prasugrel Impurity F chemical structure

Prasugrel Impurity F

CAS: 947502-66-1
Formula: C₁₈H₁₈FNO₃S
MW: 347.4 g/mol

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