Impurity Reference Standards

API Reference Standards

Characterised API working standards for assay, identification and routine QC testing, supplied with full analytical data packages.

3,188 products371 in stockCOA + SDS with every lot

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(Z)-Pralidoxime Chloride

CAS: 13698-37-8
Formula: C₇H₉ClN₂O
MW: 172.61 g/mol

ZX-026474

1-Phthalazinone

CAS: 20055-18-9
Formula: C₈H₆N₂O
MW: 146.15 g/mol

ZX-029822

1,2,4,5-Tetrachloro-3-nitrobenzene

CAS: 117-18-0
Formula: C₆HCl₄NO₂
MW: 260.9 g/mol

ZX-035649

1,6-Dimethylpyrimido(5,4-e)-1,2,4-triazine-5,7(1H,6H)-dione

CAS: 84-82-2
Formula: C₇H₇N₅O₂
MW: 193.16 g/mol

ZX-044998

1H-Indole-3-acetic acid, 1-(4-chlorobenzoyl)-5-methoxy-2-methyl-, sodium salt, trihydrate

CAS: 74252-25-8
Formula: C₁₉H₁₅ClNNaO₄
MW: 379.8 g/mol

ZX-044925

2-Butynoic acid

CAS: 590-93-2
Formula: C₄H₄O₂
MW: 84.07 g/mol

ZX-030557

2,3-Dideoxycytidine

CAS: 7481-89-2
Formula: C₉H₁₃N₃O₃
MW: 211.22 g/mol

ZX-043021

3-Ethyl-4-methyl-2-oxopyrroline

CAS: 766-36-9
Formula: C₇H₁₁NO
MW: 125.17 g/mol

ZX-033535

5-Methoxyindole-3-acetic acid

CAS: 3471-31-6
Formula: C₁₁H₁₁NO₃
MW: 205.21 g/mol

ZX-035615

5-Nitro-8-hydroxyquinoline

CAS: 4008-48-4
Formula: C₉H₆N₂O₃
MW: 190.16 g/mol

ZX-033944

Abacavir

CAS: 136470-78-5
Formula: C₁₄H₁₈N₆O
MW: 286.33 g/mol

ZX-006366

Abametapir

CAS: 1762-34-1
Formula: C₁₂H₁₂N₂
MW: 184.24 g/mol

ZX-032935

Abametapir

CAS: 1134-35-6
Formula: C₁₂H₁₂N₂
MW: 184.24 g/mol

ZX-040045

Abemaciclib

CAS: 1231929-97-7
Formula: C₂₇H₃₂F₂N₈
MW: 506.6 g/mol

ZX-006367

Abeprazan hydrochloride

CAS: 1902954-87-3
Formula: C₁₉H₁₈ClF₃N₂O₃S
MW: 446.9 g/mol

ZX-029491

Abexinostat (PCI-24781)

CAS: 783355-60-2
Formula: C₂₁H₂₃N₃O₅
MW: 397.4 g/mol

ZX-038779

Abietic Acid

CAS: 514-10-3
Formula: C₂₀H₃₀O₂
MW: 302.5 g/mol

ZX-023118

Abiraterone

CAS: 154229-19-3
Formula: C₂₄H₃₁NO
MW: 349.5 g/mol

ZX-006368

Abiraterone Acetate

CAS: 154229-18-2
Formula: C₂₆H₃₃NO₂
MW: 391.5 g/mol

ZX-006369

Abiraterone propionate

CAS: 1620323-43-4
Formula: C₂₇H₃₅NO₂
MW: 405.6 g/mol

ZX-020436

Abrocitinib

CAS: 1622902-68-4
Formula: C₁₄H₂₁N₅O₂S
MW: 323.42 g/mol

ZX-023128

Acacetin

CAS: 480-44-4
Formula: C₁₆H₁₂O₅
MW: 284.26 g/mol

ZX-034535

Acalabrutinib WS

CAS: 1420477-60-6
Formula: C₂₆H₂₃N₇O₂
MW: 465.5 g/mol

ZX-006370

Acamprosate

CAS: 77337-76-9
Formula: C₅H₁₁NO₄S
MW: 181.21 g/mol

ZX-027798

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