Impurity Reference Standards

Pharmacopeial Impurities (EP / USP / BP)

Named EP, USP and BP impurities and related compounds for pharmacopoeial methods, system suitability and peak identification.

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Ropinirole EP Impurity D (HCL)

CAS: 173990-76-6
Formula: C₁₃H₁₉ClN₂O
MW: 254.75 g/mol

ZX-026793

Ropinirole EP Impurity F

CAS: 139122-19-3
Formula: C₁₀H₁₁NO₂
MW: 177.2 g/mol

ZX-026796

Ropinirole EP Impurity G

CAS: 76149-15-0
Formula: C₁₆H₂₄N₂
MW: 244.37 g/mol

ZX-026798

Ropinirole Hydrochloride EP Impurity A

CAS: 221264-21-7
Formula: C₁₆H₂₃ClN₂O₂
MW: 310.82 g/mol

ZX-032281

Ropivacaine EP Impurity B

CAS: 27262-40-4
Formula: C₁₄H₂₀N₂O
MW: 232.32 g/mol

ZX-022693

Ropivacaine EP Impurity D

CAS: 98626-59-6
Formula: C₁₆H₂₄N₂O
MW: 260.37 g/mol

ZX-026806

Ropivacaine EP Impurity F

CAS: 1945965-95-6
Formula: C₁₇H₂₄N₂O
MW: 272.4 g/mol

ZX-032289

Ropivacaine EP Impurity G

CAS: 98717-16-9
Formula: C₁₇H₂₆N₂O
MW: 274.4 g/mol

ZX-032290

Rosuvastatin EP Impurity A

CAS: 1715120-13-0
Formula: C₂₅H₃₄FN₃O₇S
MW: 539.6 g/mol

ZX-005974

Rosuvastatin EP Impurity A t-Butyl Ester

CAS: 1714147-49-5
Formula: C₂₉H₄₂FN₃O₇S
MW: 595.7 g/mol

ZX-032315

Rosuvastatin EP Impurity A(Calcium Salt)

CAS: 1714147-47-3
Formula: C₅₀H₆₆CaF₂N₆O₁₄S₂
MW: 1117.3 g/mol

ZX-005975

Rosuvastatin EP impurity A(Sodium Salt)

CAS: 1714147-50-8
Formula: C₂₅H₃₃FN₃NaO₇S
MW: 561.6 g/mol

ZX-005976

Rosuvastatin EP Impurity B

CAS: 854898-53-6
Formula: C₂₂H₂₈FN₃O₆S
MW: 481.5 g/mol

ZX-005977

Rosuvastatin EP Impurity B

CAS: 1007912-86-8
Formula: C₂₂H₂₈FN₃O₆S
MW: 481.5 g/mol

ZX-022705

Rosuvastatin EP Impurity B Sodium

CAS: 1007871-86-4
Formula: C₂₂H₂₇FN₃NaO₆S
MW: 503.5 g/mol

ZX-026808

Rosuvastatin EP Impurity C

CAS: 1422619-13-3
Formula: C₂₂H₂₆FN₃O₆S
MW: 479.5 g/mol

ZX-005978

Rosuvastatin EP Impurity D

CAS: 503610-43-3
Formula: C₂₂H₂₆FN₃O₅S
MW: 463.5 g/mol

ZX-005979

Rosuvastatin EP Impurity E

CAS: 2226413-61-0
Formula: C₃₈H₄₆F₂N₆O₉S₂
MW: 832.9 g/mol

ZX-032309

Rosuvastatin EP Impurity F

CAS: 289042-12-2
Formula: C₂₉H₄₀FN₃O₆S
MW: 577.7 g/mol

ZX-022697

Rosuvastatin EP Impurity G

CAS: 1242184-42-4
Formula: C₂₂H₂₈FN₃O₆S
MW: 481.5 g/mol

ZX-005980

Rosuvastatin EP Impurity G (Calcium Salt)

CAS: 2414245-11-5
Formula: C₄₄H₅₄CaF₂N₆O₁₂S₂
MW: 1001.1 g/mol

ZX-026809

Rosuvastatin EP Impurity J

CAS: 2226413-62-1
Formula: C₃₈H₄₄F₂N₆O₈S₂
MW: 814.9 g/mol

ZX-032310

Rosuvastatin EP Impurity K

CAS: 1422954-12-8
Formula: C₂₂H₂₆FN₃O₅S
MW: 463.5 g/mol

ZX-022704

Rosuvastatin EP Impurity L

CAS: 1024064-70-7
Formula: C₂₂H₃₀FN₃O₆S
MW: 483.6 g/mol

ZX-022706

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