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Impurities & Reference Standards

Pharmacopeial Impurities (EP / USP / BP)

578 pharmacopeial impurities (ep / usp / bp) with CAS numbers, structures and specifications — batch COA and GHS SDS supplied.

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427in stock

COA + SDSwith every lot

Reference Standard

Ketorolac EP Impurity F chemical structure

Ketorolac EP Impurity F

CAS: 1391052-68-8
Formula: C₁₅H₁₃NO₃
MW: 255.27 g/mol

VQ-026313

Reference Standard

Ketorolac EP Impurity G chemical structure

Ketorolac EP Impurity G

CAS: 1391051-90-3
Formula: C₁₆H₁₅NO₄
MW: 285.29 g/mol

VQ-026312

Reference Standard

Ketorolac EP Impurity H chemical structure

Ketorolac EP Impurity H

CAS: 80965-09-9
Formula: C₁₆H₁₅NO₃
MW: 269.29 g/mol

VQ-026314

Reference Standard

Ketorolac EP Impurity I chemical structure

Ketorolac EP Impurity I

CAS: 113502-55-9
Formula: C₁₄H₁₃NO
MW: 211.26 g/mol

VQ-026311

Reference Standard

Ketorolac EP Impurity J chemical structure

Ketorolac EP Impurity J

CAS: 108061-03-6
Formula: C₁₇H₁₇NO₃
MW: 283.32 g/mol

VQ-026315

Reference Standard

Ketotifen EP Impurity A chemical structure

Ketotifen EP Impurity A

CAS: 4673-38-5
Formula: C₁₉H₁₉NS
MW: 293.4 g/mol

VQ-026317

Reference Standard

Ketotifen EP Impurity B chemical structure

Ketotifen EP Impurity B

CAS: 59743-88-3
Formula: C₂₀H₂₃NO₂S
MW: 341.5 g/mol

VQ-022902

Reference Standard

Ketotifen EP Impurity C chemical structure

Ketotifen EP Impurity C

CAS: 126939-27-3
Formula: C₁₉H₂₁NO₂S
MW: 327.4 g/mol

VQ-028831

Reference Standard

Ketotifen EP Impurity D chemical structure

Ketotifen EP Impurity D

CAS: 88456-70-6
Formula: C₁₉H₁₉NO₂S
MW: 325.4 g/mol

VQ-022903

Reference Standard

Ketotifen EP Impurity E chemical structure

Ketotifen EP Impurity E

CAS: 1346603-71-1
Formula: C₁₉H₁₉NOS
MW: 309.4 g/mol

VQ-022904

Reference Standard

Ketotifen EP Impurity F chemical structure

Ketotifen EP Impurity F

CAS: 34580-09-1
Formula: C₁₉H₁₉NOS
MW: 309.4 g/mol

VQ-026318

Reference Standard

Ketotifen EP Impurity G chemical structure

Ketotifen EP Impurity G

CAS: 43076-16-0
Formula: C₁₉H₁₇NO₂S
MW: 323.4 g/mol

VQ-022905

Reference Standard

Labetalol EP Impurity A chemical structure

Labetalol EP Impurity A

CAS: 1391051-99-2
Formula: C₁₉H₂₃NO₄
MW: 329.4 g/mol

VQ-022909

Reference Standard

Labetalol EP Impurity B chemical structure

Labetalol EP Impurity B

CAS: 802620-01-5
Formula: C₂₀H₂₅NO₄
MW: 343.4 g/mol

VQ-022914

Reference Standard

Labetalol EP Impurity B HCl (Mixture of Diastereomers) chemical structure

Labetalol EP Impurity B HCl (Mixture of Diastereomers)

CAS: 33778-93-7
Formula: C₂₀H₂₆ClNO₄
MW: 379.9 g/mol

VQ-026324

Reference Standard

Labetalol EP Impurity C chemical structure

Labetalol EP Impurity C

CAS: 2386661-13-6
Formula: C₁₆H₁₈N₂O₃
MW: 286.33 g/mol

VQ-022915

Reference Standard

Labetalol EP Impurity D chemical structure

Labetalol EP Impurity D

CAS: 32780-65-7
Formula: C₉H₁₃ClN₂O₃
MW: 232.66 g/mol

VQ-022907

Reference Standard

Labetalol EP Impurity D chemical structure

Labetalol EP Impurity D

CAS: 68807-83-0
Formula: C₉H₁₂N₂O₃
MW: 196.2 g/mol

VQ-037843

Reference Standard

Labetalol EP Impurity F chemical structure

Labetalol EP Impurity F

CAS: 85665-85-6
Formula: C₁₉H₂₂N₂O₃
MW: 326.4 g/mol

VQ-022913

Reference Standard

Labetalol EP Impurity G chemical structure

Labetalol EP Impurity G

CAS: 2445226-36-6
Formula: C₁₉H₂₃BrN₂O₃
MW: 407.3 g/mol

VQ-026326

Reference Standard

Labetalol EP Impurity G Hydrochloride chemical structure

Labetalol EP Impurity G Hydrochloride

CAS: 2445226-37-7
Formula: C₁₉H₂₄BrClN₂O₃
MW: 443.8 g/mol

VQ-037844

Reference Standard

Labetalol HCl EP Impurity A in salt form chemical structure

Labetalol HCl EP Impurity A in salt form

CAS: 2726492-68-6
Formula: C₁₉H₂₄ClNO₄
MW: 365.8 g/mol

VQ-026323

Reference Standard

Lacosamide EP Impurity A chemical structure

Lacosamide EP Impurity A

CAS: 175481-37-5
Formula: C₁₃H₁₈N₂O₃
MW: 250.29 g/mol

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Reference Standard

Lacosamide EP Impurity B chemical structure

Lacosamide EP Impurity B

CAS: 1318777-54-6
Formula: C₁₄H₁₈N₂O₄
MW: 278.3 g/mol

VQ-031402

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