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Impurity Reference Standards

Pharmacopoeial impurities, nitrosamines, metabolites, labelled internal standards and API working standards, each backed by analytical data for method development and QC.

20,060 products6 categories2,050 in stockCOA + SDS with every lot

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RS-N,N- Dimethyl-3-(1-Naphthalenyloxy)-3-(2-thienyl)-1-propanamine oxalate

CAS: 116817-12-0
Formula: C₁₉H₂₁NOS
MW: 311.4 g/mol

ZX-029124

Rubber Oligomer 3

CAS: 2512216-71-4
Formula: C₂₁H₄₀
MW: 292.5 g/mol

ZX-026202

Rucaparib

CAS: 283173-50-2
Formula: C₁₉H₁₈FN₃O
MW: 323.4 g/mol

ZX-022717

Rucaparib Carboxylic Acid

CAS: 1577998-89-0
Formula: C₁₈H₁₃FN₂O₃
MW: 324.3 g/mol

ZX-032334

Rucaparib Impurity 13

CAS: 283173-84-2
Formula: C₁₈H₁₃FN₂O₂
MW: 308.3 g/mol

ZX-005307

Rucaparib Impurity 16

CAS: 1577983-73-3
Formula: C₁₈H₁₆FN₃O
MW: 309.3 g/mol

ZX-005308

Rucaparib Impurity I

CAS: 1408282-26-7
Formula: C₁₁H₉FN₂O
MW: 204.2 g/mol

ZX-005309

Rucaparib Impurity II

CAS: 283173-80-8
Formula: C₁₁H₈BrFN₂O
MW: 283.1 g/mol

ZX-005310

Rucaparib Nitrobenzoate Impurity

CAS: 1305320-70-0
Formula: C₁₂H₁₃FN₂O₄
MW: 268.24 g/mol

ZX-026851

Rufinamide

CAS: 106308-44-5
Formula: C₁₀H₈F₂N₄O
MW: 238.19 g/mol

ZX-032335

Rufinamide Cyano Impurity

CAS: 202003-06-3
Formula: C₁₀H₆F₂N₄
MW: 220.18 g/mol

ZX-032338

Rufinamide Impurity C

CAS: 166196-11-8
Formula: C₁₀H₇F₂N₃O₂
MW: 239.18 g/mol

ZX-026853

Rufinamide USP RC B

CAS: 217448-86-7
Formula: C₁₁H₉F₂N₃O₂
MW: 253.2 g/mol

ZX-026852

Rufinamide-15N,d2

CAS: 1795037-48-7
Formula: C₁₀H₈F₂N₄O
MW: 241.2 g/mol

ZX-036150

Rufinamide-5-Carboxamide

CAS: 1622904-99-7
Formula: C₁₀H₈F₂N₄O
MW: 238.19 g/mol

ZX-032339

Rupatadine EP Impurity A

CAS: 1354055-68-7
Formula: C₃₀H₃₁ClN₃O₄⁺
MW: 533 g/mol

ZX-022722

Rupatadine EP Impurity C

CAS: 1224515-72-3
Formula: C₄₅H₄₃Cl₂N₅
MW: 724.8 g/mol

ZX-022721

Rupatadine Fumarate

CAS: 182349-12-8
Formula: C₃₀H₃₀ClN₃O₄
MW: 532 g/mol

ZX-026854

Rupatadine impurity 27

CAS: 2242584-13-8
Formula: C₁₄H₁₇Cl₃N₂
MW: 319.7 g/mol

ZX-032341

Rupatadine Impurity B

CAS: 156523-04-5
Formula: C₂₆H₂₄ClN₃O
MW: 429.9 g/mol

ZX-026856

Rupatadine N-Oxide

CAS: 1704730-21-1
Formula: C₂₆H₂₆ClN₃O
MW: 432 g/mol

ZX-026857

Rupatidine

CAS: 158876-82-5
Formula: C₂₆H₂₆ClN₃
MW: 416 g/mol

ZX-032340

Ruscogenin

CAS: 472-11-7
Formula: C₂₇H₄₂O₄
MW: 430.6 g/mol

ZX-036151

Rutin

CAS: 153-18-4
Formula: C₂₇H₃₀O₁₆
MW: 610.5 g/mol

ZX-032343

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