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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(2S,2S',Trans)-Saxagliptin

CAS: 1564265-96-8
Formula: C₁₈H₂₅N₃O₂
MW: 315.4 g/mol

ZX-032406

(2S,3R)-Efinaconazole

CAS: 2055038-61-2
Formula: C₁₈H₂₂F₂N₄O
MW: 348.4 g/mol

ZX-024458

(2S,3S)-Efinaconazole

CAS: 164650-45-7
Formula: C₁₈H₂₂F₂N₄O
MW: 348.4 g/mol

ZX-021525

(2S,3Z)-Cefprozil

CAS: 110764-35-7
Formula: C₁₈H₁₉N₃O₅S
MW: 389.4 g/mol

ZX-027698

(2S,5S)-Avibactam Sodium Salt

CAS: 2064219-26-5
Formula: C₇H₁₀N₃NaO₆S
MW: 287.23 g/mol

ZX-028151

(3R,4S)-Tofacitinib

CAS: 1092578-46-5
Formula: C₁₆H₂₀N₆O
MW: 312.37 g/mol

ZX-027310

(3R,5R)-Pitavastatin Calcium

CAS: 254452-96-5
Formula: C₅₀H₄₆CaF₂N₂O₈
MW: 881 g/mol

ZX-031893

(3R,5S)-Atorvastatin Sodium

CAS: 131275-93-9
Formula: C₃₃H₃₄FN₂NaO₅
MW: 580.6 g/mol

ZX-023399

(3R,5S)-Fluvastatin Sodium Salt

CAS: 94061-80-0
Formula: C₂₄H₂₅FNNaO₄
MW: 433.4 g/mol

ZX-029611

(3R,8S,9S,12R)-Atazanavir

CAS: 1292296-11-7
Formula: C₃₈H₅₂N₆O₇
MW: 704.9 g/mol

ZX-020682

(3R,8S,9S,12S) Atazanavir

CAS: 1332981-14-2
Formula: C₃₈H₅₂N₆O₇
MW: 704.9 g/mol

ZX-019899

(3S,4R)-Benidipine HCl

CAS: 119009-45-9
Formula: C₂₈H₃₁N₃O₆
MW: 505.6 g/mol

ZX-027825

(3S,4R)-Tofacitinib

CAS: 1092578-48-7
Formula: C₁₆H₂₀N₆O
MW: 312.37 g/mol

ZX-027309

(3S,4S)-Tofacitinib

CAS: 1092578-47-6
Formula: C₁₆H₂₀N₆O
MW: 312.37 g/mol

ZX-022925

(3S,4S)-Tofacitinib Citrate

CAS: 2174011-55-1
Formula: C₂₂H₂₈N₆O₈
MW: 504.5 g/mol

ZX-022926

(3S,5R)-Atorvastatin Calcium

CAS: 887196-25-0
Formula: C₆₆H₆₈CaF₂N₄O₁₀
MW: 1155.3 g/mol

ZX-020704

(3S,5R)-Fluvastatin Sodium Salt

CAS: 94061-81-1
Formula: C₂₄H₂₅FNNaO₄
MW: 433.4 g/mol

ZX-029614

(3S,5R)-Pitavastatin Calcium

CAS: 254452-88-5
Formula: C₅₀H₄₆CaF₂N₂O₈
MW: 881 g/mol

ZX-026446

(3S,5S)-Atorvastatin Sodium

CAS: 1428118-38-0
Formula: C₃₃H₃₄FN₂NaO₅
MW: 580.6 g/mol

ZX-023405

(3S,5S)-Pitavastatin Calcium

CAS: 254452-92-1
Formula: C₅₀H₄₆CaF₂N₂O₈
MW: 881 g/mol

ZX-026448

(3S,8R,9S,12S) Atazanavir

CAS: 1292296-09-3
Formula: C₃₈H₅₂N₆O₇
MW: 704.9 g/mol

ZX-019901

(4S)-Brivaracetam

CAS: 357336-19-7
Formula: C₁₁H₂₀N₂O₂
MW: 212.29 g/mol

ZX-023635

(6BR,10aR) Lumateperone

CAS: 1576240-16-8
Formula: C₂₄H₂₈FN₃O
MW: 393.5 g/mol

ZX-025465

(7-10)-Icatibant

CAS: 148416-85-7
Formula: C₂₈H₄₁N₇O₆
MW: 571.7 g/mol

ZX-029890

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