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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

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1,516in stock

COA + SDSwith every lot

Reference Standard

Desulfo Aztreonam chemical structure

Desulfo Aztreonam

CAS: 102579-59-9
Formula: C₁₃H₁₇N₅O₅S
MW: 355.37 g/mol

VQ-023397

Reference Standard

Desvenlafaxine Benzoate chemical structure

Desvenlafaxine Benzoate

CAS: 1147940-37-1
Formula: C₂₃H₃₁NO₄
MW: 385.5 g/mol

VQ-042849

Reference Standard

Desvenlafaxine Benzyl Ether chemical structure

Desvenlafaxine Benzyl Ether

CAS: 93413-61-7
Formula: C₂₃H₃₁NO₂
MW: 353.5 g/mol

VQ-028899

Reference Standard

Deucravacitinib Acid impurity chemical structure

Deucravacitinib Acid impurity

CAS: 2245111-18-4
Formula: C₁₉H₁₉N₇O₄
MW: 409.4 g/mol

VQ-030146

Reference Standard

Deucravacitinib Dimer Impurity chemical structure

Deucravacitinib Dimer Impurity

CAS: 3097652-25-7
Formula: C₃₈H₃₈N₁₆O₆
MW: 814.8 g/mol

VQ-036648

Reference Standard

Deucravacitinib Hydroxy Impurity

Deucravacitinib Hydroxy Impurity

Formula: C₁₉H₁₇D₃N₈O₃
MW: 411.43 g/mol

In stock

Reference Standard

Deucravacitinib Impurity 16 chemical structure

Deucravacitinib Impurity 16

CAS: 2417137-50-7
Formula: C₂₀H₂₂N₈O₃
MW: 422.4 g/mol

VQ-025268

Reference Standard

Deucravacitinib Impurity 36 chemical structure

Deucravacitinib Impurity 36

CAS: 1040246-87-4
Formula: C₅H₂Cl₂N₂O₂
MW: 192.98 g/mol

VQ-047996

Reference Standard

Deucravacitinib Impurity 37

Deucravacitinib Impurity 37

CAS: 3030727-45-5
Formula: C₁₁H₁₄N₄O
MW: 218.26 g/mol

VQ-047997

Reference Standard

Deucravacitinib Impurity 42

Deucravacitinib Impurity 42

CAS: 1823277-97-9
Formula: C₅H₄N₂O₄
MW: 156.1 g/mol

VQ-047998

Reference Standard

Deucravacitinib Impurity 45

Deucravacitinib Impurity 45

CAS: 3030728-25-4
Formula: C₂₁H₂₄N₈O₃
MW: 436.48 g/mol

VQ-036646

Reference Standard

Deucravacitinib Impurity 8 chemical structure

Deucravacitinib Impurity 8

CAS: 1609393-79-4
Formula: C₁₉H₂₀N₈O₃
MW: 408.4 g/mol

VQ-036649

Reference Standard

Deucravacitinib Unknown Impurity 0.91 RRT

Deucravacitinib Unknown Impurity 0.91 RRT

Formula: C₂₀H₁₉D₃N₈O₄
MW: 441.46 g/mol

In stock

Reference Standard

Deutetrabenazine Hydroxy Impurity (Mixture)

Deutetrabenazine Hydroxy Impurity (Mixture)

Formula: C₁₈H₂₂D₃NO₃
MW: 306.41 g/mol

In stock

Reference Standard

Dexamethasone 17-Formyloxy-17-Acid chemical structure

Dexamethasone 17-Formyloxy-17-Acid

CAS: 473273-04-0
Formula: C₂₂H₂₇FO₆
MW: 406.4 g/mol

VQ-022348

Reference Standard

Dexamethasone 17-Propionate chemical structure

Dexamethasone 17-Propionate

CAS: 15423-89-9
Formula: C₂₅H₃₃FO₆
MW: 448.5 g/mol

VQ-022351

Reference Standard

Dexamethasone 21-Formate Impurity chemical structure

Dexamethasone 21-Formate Impurity

Formula: C₂₃H₂₉FO₆
MW: 420.5 g/mol

In stock

Reference Standard

Dexamethasone Acetate Impurity chemical structure

Dexamethasone Acetate Impurity

CAS: 1177-87-3
Formula: C₂₄H₃₁FO₆
MW: 434.5 g/mol

In stock

Reference Standard

Dexamethasone Acid Impurity chemical structure

Dexamethasone Acid Impurity

CAS: 37927-01-8
Formula: C₂₁H₂₇FO₅
MW: 378.4 g/mol

In stock

Reference Standard

Dexamethasone Bromo Acetate Impurity chemical structure

Dexamethasone Bromo Acetate Impurity

CAS: 13796-49-1
Formula: C₂₄H₃₁BrO₆
MW: 495.4 g/mol

In stock

Reference Standard

Dexamethasone Ethyl Ester chemical structure

Dexamethasone Ethyl Ester

CAS: 2991360-83-7
Formula: C₂₃H₃₁FO₅
MW: 406.5 g/mol

VQ-022344

Reference Standard

Dexamethasone Impurity 29

Dexamethasone Impurity 29

CAS: 4619-61-8
Formula: C₂₂H₂₉FO₆
MW: 408.5 g/mol

VQ-036656

Reference Standard

Dexamethasone Impurity K(Stage -IV)

Dexamethasone Impurity K(Stage -IV)

Formula: C₂₄H₂₈O₅
MW: 396.48 g/mol

In stock

Reference Standard

Dexamethasone isonicotinate chemical structure

Dexamethasone isonicotinate

CAS: 2265-64-7
Formula: C₂₈H₃₂FNO₆
MW: 497.6 g/mol

VQ-030149

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