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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

Ibuprofen Impurity At RRT 1.4 chemical structure

Ibuprofen Impurity At RRT 1.4

CAS: 41283-72-1
Formula: C₁₅H₂₂O₂
MW: 234.33 g/mol

In stock

Reference Standard

Ibuprofen Impurity E chemical structure

Ibuprofen Impurity E

CAS: 38861-78-8
Formula: C₁₂H₁₆O
MW: 176.25 g/mol

In stock

Reference Standard

Ibuprofen Isopropyl Ester chemical structure

Ibuprofen Isopropyl Ester

CAS: 64622-17-9
Formula: C₁₆H₂₄O₂
MW: 248.36 g/mol

VQ-031137

Reference Standard

Ibuprofen Lysinate chemical structure

Ibuprofen Lysinate

CAS: 57469-77-9
Formula: C₁₉H₃₂N₂O₄
MW: 352.5 g/mol

VQ-026120

Reference Standard

Ibuprofen Piconol chemical structure

Ibuprofen Piconol

CAS: 64622-45-3
Formula: C₁₉H₂₃NO₂
MW: 297.4 g/mol

VQ-048615

Reference Standard

Ibuprofen Poly(oxy-1,2-ethanediyl) Ester

Ibuprofen Poly(oxy-1,2-ethanediyl) Ester

CAS: 87553-98-8
Formula: (C₂H₄O)₉C₁₃H₁₈O₂
MW: 602.75 g/mol

VQ-043909

Reference Standard

Icomethasone chemical structure

CAS: 4647-20-5
Formula: C₂₂H₂₉ClO₅
MW: 408.9 g/mol

VQ-026767

Reference Standard

Idelalisib Enatiomeric Impurity

Idelalisib Enatiomeric Impurity

CAS: 2184933-01-3
Formula: C₂₂H₁₈FN₇O
MW: 415.43 g/mol

VQ-048636

Reference Standard

Ifosfamide chemical structure

CAS: 3778-73-2
Formula: C₇H₁₅Cl₂N₂O₂P
MW: 261.08 g/mol

VQ-022821

Reference Standard

Ifosfamide Acylate chemical structure

Ifosfamide Acylate

CAS: 72578-71-3
Formula: C₇H₁₃Cl₂N₂O₃P
MW: 275.07 g/mol

VQ-037657

Reference Standard

Ifosfamide Dechloro Impurity chemical structure

Ifosfamide Dechloro Impurity

CAS: 1673581-55-9
Formula: C₇H₁₆ClN₂O₂P
MW: 226.64 g/mol

VQ-026131

Reference Standard

Iguratimod Impurity 2 chemical structure

Iguratimod Impurity 2

CAS: 123662-92-0
Formula: C₁₈H₁₆N₂O₆S
MW: 388.4 g/mol

VQ-045321

Reference Standard

Iguratimod impurity A chemical structure

Iguratimod impurity A

CAS: 149436-41-9
Formula: C₁₆H₁₉ClN₂O₅S
MW: 386.9 g/mol

VQ-045322

Reference Standard

Ilaprazole Impurity 11 chemical structure

Ilaprazole Impurity 11

CAS: 2285346-39-4
Formula: C₁₈H₁₆N₄O
MW: 304.3 g/mol

VQ-048642

Reference Standard

Ilaprazole Impurity 12 chemical structure

Ilaprazole Impurity 12

CAS: 2285346-40-7
Formula: C₁₉H₁₈N₄OS
MW: 350.4 g/mol

VQ-037659

Reference Standard

Ilaprazole Impurity 13

Ilaprazole Impurity 13

CAS: 2285346-41-8
Formula: C₃₈H₃₆N₈O₂S₂
MW: 700.88 g/mol

VQ-048643

Reference Standard

Ilaprazole Impurity 16 chemical structure

Ilaprazole Impurity 16

CAS: 2285346-43-0
Formula: C₂₀H₁₈N₅OS⁺
MW: 376.5 g/mol

VQ-048644

Reference Standard

Ilaprazole Sulfone chemical structure

Ilaprazole Sulfone

CAS: 172152-37-3
Formula: C₁₉H₁₈N₄O₃S
MW: 382.4 g/mol

VQ-026132

Reference Standard

Iloperidone Chloropropoxy Impurity chemical structure

Iloperidone Chloropropoxy Impurity

CAS: 58113-30-7
Formula: C₁₂H₁₅ClO₃
MW: 242.7 g/mol

VQ-022825

Reference Standard

Iloperidone Impurity chemical structure

Iloperidone Impurity

CAS: 1375651-23-2
Formula: C₃₆H₃₉FN₄O₅
MW: 626.7 g/mol

VQ-026137

Reference Standard

Iloperidone Impurity 2 chemical structure

Iloperidone Impurity 2

CAS: 1309041-89-1
Formula: C₁₉H₂₂O₆S
MW: 378.4 g/mol

VQ-045411

Reference Standard

Iloperidone Impurity 24 chemical structure

Iloperidone Impurity 24

CAS: 1341456-39-0
Formula: C₁₂H₁₃F₂NO
MW: 225.23 g/mol

VQ-048648

Reference Standard

Iloperidone Impurity 28

Iloperidone Impurity 28

CAS: 1400590-28-4
Formula: C₂₅H₂₇FN₂O₆
MW: 470.5 g/mol

VQ-037665

Reference Standard

Iloperidone Impurity 35 Hydrochloride

Iloperidone Impurity 35 Hydrochloride

CAS: 2324773-34-2
Formula: C₁₂H₁₃FN₂O.HCl
MW: 256.7 g/mol

VQ-048649

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