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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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Atorvastatin Cyclic Sodium Salt Isopropyl Impurity

CAS: 1316291-19-6
Formula: C₃₃H₃₄FN₂NaO₇
MW: 612.6 g/mol

ZX-004391

Atorvastatin Dehydro Lactone

CAS: 442851-50-5
Formula: C₃₃H₃₁FN₂O₃
MW: 522.6 g/mol

ZX-019914

Atorvastatin Di-acetonide tert-Butyl Ester

CAS: 1116118-82-1
Formula: C₅₀H₆₄FN₃O₈
MW: 854.1 g/mol

ZX-023414

Atorvastatin Diamino impurity

CAS: 2299304-89-3
Formula: C₂₄H₄₄N₂O₇
MW: 472.6 g/mol

ZX-028111

Atorvastatin Dibromo

CAS: 2514955-94-1
Formula: C₁₄H₉Br₂FO
MW: 372.03 g/mol

ZX-020714

Atorvastatin Diepoxide

CAS: 887470-43-1
Formula: C₃₃H₃₅FN₂O₇
MW: 590.6 g/mol

ZX-020707

Atorvastatin Difluoro Impurity

CAS: 693793-82-7
Formula: C₂₆H₂₃F₂NO₃
MW: 435.5 g/mol

ZX-004392

Atorvastatin Diketo Amide Desfluoro Impurity

CAS: 444577-70-2
Formula: C₂₆H₂₅NO₃
MW: 399.5 g/mol

ZX-004393

Atorvastatin Diketoene Impurity

CAS: 1331869-19-2
Formula: C₂₆H₂₂FNO₃
MW: 415.5 g/mol

ZX-020708

Atorvastatin EP Impurity A

CAS: 433289-84-0
Formula: C₃₃H₃₆N₂O₅
MW: 540.6 g/mol

ZX-005586

Atorvastatin EP Impurity A (Calcium Salt)

CAS: 433289-83-9
Formula: C₆₆H₇₀CaN₄O₁₀
MW: 1119.4 g/mol

ZX-005587

Atorvastatin EP Impurity A (Sodium Salt)

CAS: 1516864-05-3
Formula: C₃₃H₃₆N₂O₅
MW: 540.6 g/mol

ZX-005588

Atorvastatin EP Impurity B

CAS: 842103-12-2
Formula: C₃₃H₃₅FN₂O₅
MW: 558.6 g/mol

ZX-020705

Atorvastatin EP Impurity C (Calcium Salt)

CAS: 693793-53-2
Formula: C₆₆H₆₆CaF₄N₄O₁₀
MW: 1191.3 g/mol

ZX-005589

Atorvastatin EP Impurity C (Freebase)

CAS: 693794-20-6
Formula: C₃₃H₃₄F₂N₂O₅
MW: 576.6 g/mol

ZX-005590

Atorvastatin EP Impurity C Sodium salt

CAS: 1807481-00-0
Formula: C₃₃H₃₃F₂N₂NaO₅
MW: 598.6 g/mol

ZX-023416

Atorvastatin EP Impurity D

CAS: 148146-51-4
Formula: C₂₆H₂₂FNO₄
MW: 431.5 g/mol

ZX-019910

Atorvastatin EP Impurity E Calcium salt

CAS: 1105067-88-6
Formula: C₆₆H₆₈CaF₂N₄O₁₀
MW: 1155.3 g/mol

ZX-023404

Atorvastatin EP Impurity F

CAS: 887196-24-9
Formula: C₄₀H₄₈FN₃O₈
MW: 717.8 g/mol

ZX-005591

Atorvastatin EP Impurity F (Calcium Salt)

CAS: 1105067-87-5
Formula: C₈₀H₉₄CaF₂N₆O₁₆
MW: 1473.7 g/mol

ZX-005592

Atorvastatin EP Impurity G

CAS: 887324-53-0
Formula: C₃₄H₃₇FN₂O₅
MW: 572.7 g/mol

ZX-005593

Atorvastatin EP Impurity H

CAS: 125995-03-1
Formula: C₃₃H₃₃FN₂O₄
MW: 540.6 g/mol

ZX-005594

Atorvastatin EP Impurity I

CAS: 125971-95-1
Formula: C₄₀H₄₇FN₂O₅
MW: 654.8 g/mol

ZX-019911

Atorvastatin EP Impurity J

CAS: 1105067-93-3
Formula: C₃₃H₃₃FN₂O₄
MW: 540.6 g/mol

ZX-019736

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