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Impurities & Reference Standards

Pharmacopeial Impurities (EP / USP / BP)

578 pharmacopeial impurities (ep / usp / bp) with CAS numbers, structures and specifications — batch COA and GHS SDS supplied.

4,399products

427in stock

COA + SDSwith every lot

Reference Standard

Cyproterone Acetate EP Impurity G chemical structure

Cyproterone Acetate EP Impurity G

CAS: 23814-84-8
Formula: C₂₄H₃₁ClO₅
MW: 435 g/mol

VQ-022283

Reference Standard

Cyproterone Acetate EP Impurity H chemical structure

Cyproterone Acetate EP Impurity H

CAS: 2668-74-8
Formula: C₂₃H₃₀O₄
MW: 370.5 g/mol

VQ-022286

Reference Standard

Cyproterone Acetate EP Impurity I chemical structure

Cyproterone Acetate EP Impurity I

CAS: 13698-49-2
Formula: C₂₃H₂₇ClO₄
MW: 402.9 g/mol

VQ-021198

Reference Standard

Cyproterone Acetate EP Impurity J chemical structure

Cyproterone Acetate EP Impurity J

CAS: 15423-97-9
Formula: C₂₄H₃₀O₅
MW: 398.5 g/mol

VQ-028900

Reference Standard

Cytarabine EP Impurity A chemical structure

Cytarabine EP Impurity A

CAS: 3083-77-0
Formula: C₉H₁₂N₂O₆
MW: 244.2 g/mol

VQ-023953

Reference Standard

Cytarabine EP Impurity F chemical structure

Cytarabine EP Impurity F

CAS: 32830-01-6
Formula: C₉H₁₁N₃O₄
MW: 225.2 g/mol

VQ-022288

Reference Standard

Cytarabine EP Impurity G chemical structure

Cytarabine EP Impurity G

CAS: 2140-61-6
Formula: C₁₀H₁₅N₃O₅
MW: 257.24 g/mol

VQ-022289

Reference Standard

Cytarabine EP Impurity H chemical structure

Cytarabine EP Impurity H

CAS: 31698-14-3
Formula: C₉H₁₁N₃O₄
MW: 225.2 g/mol

VQ-029970

Reference Standard

Cytarabine EP Impurity I chemical structure

Cytarabine EP Impurity I

CAS: 6829-31-8
Formula: C₁₀H₁₅N₃O₅
MW: 257.24 g/mol

VQ-022290

Reference Standard

Dabigatran Etexilate Mesylate EP Impurity C chemical structure

Dabigatran Etexilate Mesylate EP Impurity C

CAS: 1873316-01-8
Formula: C₃₄H₄₁N₇O₅
MW: 627.7 g/mol

VQ-029984

Reference Standard

Dacarbazine EP Impurity A chemical structure

Dacarbazine EP Impurity A

CAS: 4656-86-4
Formula: C₄H₃N₅O
MW: 137.1 g/mol

VQ-022298

Reference Standard

Dacarbazine EP Impurity B Monohydrate chemical structure

Dacarbazine EP Impurity B Monohydrate

CAS: 7151-03-3
Formula: C₄H₅N₅O₂
MW: 155.12 g/mol

VQ-029994

Reference Standard

Dacarbazine EP Impurity C chemical structure

Dacarbazine EP Impurity C

CAS: 1314929-56-0
Formula: C₄H₅N₅O
MW: 139.12 g/mol

VQ-029995

Reference Standard

Daclatasvir EP Impurity G chemical structure

Daclatasvir EP Impurity G

CAS: 1447744-93-5
Formula: C₃₀H₃₂N₆O₂
MW: 508.6 g/mol

VQ-036505

Reference Standard

Daclatasvir EP Impurity H (Freebase) chemical structure

Daclatasvir EP Impurity H (Freebase)

CAS: 1007882-27-0
Formula: C₂₆H₂₈N₆
MW: 424.5 g/mol

VQ-006314

Reference Standard

Daclatasvir EP Impurity H (tetrahydrochloride) chemical structure

Daclatasvir EP Impurity H (tetrahydrochloride)

CAS: 1009119-83-8
Formula: C₂₆H₃₂Cl₄N₆
MW: 570.4 g/mol

In stock

Reference Standard

Dapagliflozin EP Impurity B chemical structure

Dapagliflozin EP Impurity B

CAS: 3093141-55-7
Formula: C₂₃H₂₉ClO₆
MW: 436.9 g/mol

VQ-025172

Reference Standard

Dapagliflozin USP Related Compound A chemical structure

Dapagliflozin USP Related Compound A

CAS: 1807632-95-6
Formula: C₂₁H₂₅BrO₆
MW: 453.3 g/mol

In stock

Reference Standard

Dapsone EP Impurity A chemical structure

Dapsone EP Impurity A

CAS: 25963-47-7
Formula: C₁₂H₁₁NO₃S
MW: 249.29 g/mol

VQ-030039

Reference Standard

Dapsone EP Impurity D chemical structure

Dapsone EP Impurity D

CAS: 27147-69-9
Formula: C₁₂H₁₂N₂O₂S
MW: 248.3 g/mol

VQ-030040

Reference Standard

Daunorubicin EP Impurity C chemical structure

Daunorubicin EP Impurity C

CAS: 79438-97-4
Formula: C₂₈H₃₁NO₁₀
MW: 541.5 g/mol

VQ-030308

Reference Standard

Daunorubicin EP Impurity F chemical structure

Daunorubicin EP Impurity F

CAS: 771423-67-7
Formula: C₂₈H₃₁NO₁₀
MW: 541.5 g/mol

VQ-025214

Reference Standard

Daunorubicin EP Impurity G chemical structure

Daunorubicin EP Impurity G

CAS: 79466-09-4
Formula: C₂₇H₃₁NO₉
MW: 513.5 g/mol

VQ-048098

Reference Standard

Deferasirox EP Impurity A chemical structure

Deferasirox EP Impurity A

CAS: 1972-71-0
Formula: C₁₄H₁₁NO₄
MW: 257.24 g/mol

VQ-025225

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