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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

20,060 products · page 835 of 836

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Zolpidem Tartrate - Impurity A

CAS: 1346600-85-8
Formula: C₁₉H₂₁N₃O
MW: 307.4 g/mol

ZX-032792

Zolpidem-d6

CAS: 959605-90-4
Formula: C₁₉H₂₁N₃O
MW: 313.4 g/mol

ZX-036421

Zolpidic acid

CAS: 189005-44-5
Formula: C₁₇H₁₆N₂O₂
MW: 280.32 g/mol

ZX-032794

Zomepirac Sodium Salt

CAS: 64092-48-4
Formula: C₁₅H₁₃ClNNaO₃
MW: 313.71 g/mol

ZX-044020

Zonisamide

CAS: 68291-97-4
Formula: C₈H₈N₂O₃S
MW: 212.23 g/mol

ZX-027673

Zonisamide N,N-Dimethylformimidamide

CAS: 1217201-89-2
Formula: C₁₁H₁₃N₃O₃S
MW: 267.31 g/mol

ZX-023072

Zonisamide USP Related Compound A

CAS: 73101-64-1
Formula: C₈H₆NNaO₄S
MW: 235.19 g/mol

ZX-023071

Zonisamide-d4

CAS: 1020720-04-0
Formula: C₈H₈N₂O₃S
MW: 216.25 g/mol

ZX-036422

Zopiclone

CAS: 43200-80-2
Formula: C₁₇H₁₇ClN₆O₃
MW: 388.8 g/mol

ZX-006922

Zopiclone EP Impurity A

CAS: 43200-96-0
Formula: C₁₇H₁₇ClN₆O₄
MW: 404.8 g/mol

ZX-006076

Zopiclone EP Impurity B

CAS: 43200-81-3
Formula: C₁₁H₇ClN₄O₂
MW: 262.65 g/mol

ZX-006077

Zopiclone EP impurity C

CAS: 148891-53-6
Formula: C₁₁H₇ClN₄O
MW: 246.65 g/mol

ZX-006078

Zopiclone Impurity 2

CAS: 43200-82-4
Formula: C₁₁H₅ClN₄O₂
MW: 260.63 g/mol

ZX-005543

Zopiclone-D4

CAS: 1435933-78-0
Formula: C₁₇H₁₇ClN₆O₃
MW: 392.8 g/mol

ZX-044702

Zopiclone-d8

CAS: 1215518-83-4
Formula: C₁₇H₁₇ClN₆O₃
MW: 396.9 g/mol

ZX-043194

Zotepine

CAS: 26615-21-4
Formula: C₁₈H₁₈ClNOS
MW: 331.9 g/mol

ZX-032798

Zuclomiphene citrate

CAS: 7619-53-6
Formula: C₃₂H₃₆ClNO₈
MW: 598.1 g/mol

ZX-024019

Zuclopenthixol acetate

CAS: 85721-05-7
Formula: C₂₄H₂₇ClN₂O₂S
MW: 443 g/mol

ZX-036423

Zuclopenthixol decanoate

CAS: 64053-00-5
Formula: C₃₂H₄₃ClN₂O₂S
MW: 555.2 g/mol

ZX-032800

Zuclopenthixol Decanoate EP Impurity C

CAS: 53772-83-1
Formula: C₂₂H₂₅ClN₂OS
MW: 401 g/mol

ZX-032799

Zuclopenthixol diHydrochloride

CAS: 58045-23-1
Formula: C₂₂H₂₇Cl₃N₂OS
MW: 473.9 g/mol

ZX-044544

α-(2,3-Dimethylphenyl)-1-(trityl)-1H-imidazole-4-methanol

CAS: 176721-01-0
Formula: C₃₁H₂₈N₂O
MW: 444.6 g/mol

ZX-025514

α-Chloro-2',5'-dihydroxyacetophenone

CAS: 60912-82-5
Formula: C₈H₇ClO₃
MW: 186.59 g/mol

ZX-030013

α-Decitabine-3',5'-bis(4-chlorobenzoate)

CAS: 1140891-02-6
Formula: C₂₂H₁₈Cl₂N₄O₆
MW: 505.3 g/mol

ZX-021350

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