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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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Reference Standard

Dexamethasone Mesylate Impurity chemical structure

Dexamethasone Mesylate Impurity

CAS: 2265-22-7
Formula: C₂₃H₃₁FO₇S
MW: 470.6 g/mol

In stock

Reference Standard

Dexamethasone Phenylpropionate chemical structure

Dexamethasone Phenylpropionate

CAS: 1879-72-7
Formula: C₃₁H₃₇FO₆
MW: 524.6 g/mol

VQ-030152

Reference Standard

Dexamethasone Phosphate Bisulfate Adduct Sodium Salt chemical structure

Dexamethasone Phosphate Bisulfate Adduct Sodium Salt

CAS: 39005-10-2
Formula: C₂₂H₃₂FO₁₁PS
MW: 554.5 g/mol

VQ-025276

Reference Standard

Dexamethasone Pivalate chemical structure

Dexamethasone Pivalate

CAS: 1926-94-9
Formula: C₂₇H₃₇FO₆
MW: 476.6 g/mol

VQ-048002

Reference Standard

Dexamethasone Sodium Phosphate Impurity C chemical structure

Dexamethasone Sodium Phosphate Impurity C

CAS: 1202001-99-7
Formula: C₂₂H₃₀FO₈P
MW: 472.4 g/mol

VQ-035955

Reference Standard

Dexamethasone sulfite adduct chemical structure

Dexamethasone sulfite adduct

CAS: 763865-71-0
Formula: C₂₂H₃₂FO₁₁PS
MW: 554.5 g/mol

VQ-036654

Reference Standard

Dexamethasone-17-Ketone (Mixture of Diastereomers) chemical structure

Dexamethasone-17-Ketone (Mixture of Diastereomers)

CAS: 2285-53-2
Formula: C₂₀H₂₅FO₃
MW: 332.4 g/mol

VQ-030150

Reference Standard

Dexamethasone-17,20 21-Aldehyde chemical structure

Dexamethasone-17,20 21-Aldehyde

CAS: 6762-51-2
Formula: C₂₂H₂₇FO₄
MW: 374.4 g/mol

VQ-025273

Reference Standard

Dexibuprofen Isopropyl Ester chemical structure

Dexibuprofen Isopropyl Ester

CAS: 1114975-39-1
Formula: C₁₆H₂₄O₂
MW: 248.36 g/mol

VQ-031135

Reference Standard

Dexketoprofen chemical structure

CAS: 22161-81-5
Formula: C₁₆H₁₄O₃
MW: 254.28 g/mol

VQ-031376

Reference Standard

Dexketoprofen Methyl Ester chemical structure

Dexketoprofen Methyl Ester

CAS: 81601-91-4
Formula: C₁₇H₁₆O₃
MW: 268.31 g/mol

VQ-034986

Reference Standard

Dexlansoprazol Impurity (RRT 2.17)

Dexlansoprazol Impurity (RRT 2.17)

Formula: C₃₂H₂₄F₆N₆O₂S.C₂HF₃O₂
MW: 784.65 g/mol

In stock

Reference Standard

Dexlansoprazole Dimer Impurity chemical structure

Dexlansoprazole Dimer Impurity

CAS: 1083100-26-8
Formula: C₂₅H₂₂F₆N₄O₃S
MW: 572.5 g/mol

In stock

Reference Standard

Dexlansoprazole Methoxy Thiadiazinium Impurity

Dexlansoprazole Methoxy Thiadiazinium Impurity

CAS: 102804-87-5
Formula: C₁₅H₁₄N₃OS
MW: 284.4 g/mol

VQ-043894

Reference Standard

Dexlansoprazole Sulfide Impurity

Dexlansoprazole Sulfide Impurity

Formula: C₁₆H₁₄F₃N₃OS
MW: 353.36 g/mol

In stock

Reference Standard

Dexmedetomidine Impurity III ((2,3-Dimethylphenyl)[1-(trityl)-1H-imidazol-4-yl]methanone)

Dexmedetomidine Impurity III ((2,3-Dimethylphenyl)[1-(trityl)-1H-imidazol-4-yl]methanone)

CAS: 176721-02-1
Formula: C₃₁H₂₆N₂O
MW: 442.55 g/mol

VQ-038277

Reference Standard

Dexrabeprazole sodium chemical structure

Dexrabeprazole sodium

CAS: 171440-18-9
Formula: C₁₈H₂₀N₃NaO₃S
MW: 381.4 g/mol

VQ-027709

Reference Standard

Dexrazoxane R-Isomer chemical structure

Dexrazoxane R-Isomer

CAS: 24613-06-7
Formula: C₁₁H₁₆N₄O₄
MW: 268.27 g/mol

VQ-030157

Reference Standard

DextroKetoconazole chemical structure

DextroKetoconazole

CAS: 142128-59-4
Formula: C₂₆H₂₈Cl₂N₄O₄
MW: 531.4 g/mol

VQ-037805

Reference Standard

Dextromethorphan Impurity A (Hydrochloride) chemical structure

Dextromethorphan Impurity A (Hydrochloride)

CAS: 1087-69-0
Formula: C₁₇H₂₄ClNO
MW: 293.8 g/mol

VQ-004789

Reference Standard

Dextromethorphan-10-ol chemical structure

Dextromethorphan-10-ol

CAS: 2382909-24-0
Formula: C₁₈H₂₅NO₂
MW: 287.4 g/mol

VQ-037566

Reference Standard

Dextrosimendan chemical structure

CAS: 144238-75-5
Formula: C₁₄H₁₂N₆O
MW: 280.28 g/mol

VQ-026454

Reference Standard

Di Boc Palbociclib 5A Impurity

Di Boc Palbociclib 5A Impurity

Formula: C₁₇H₂₈N₄O₄
MW: 352.43 g/mol

In stock

Reference Standard

Di Boc Velpatasvir chemical structure

Di Boc Velpatasvir

CAS: 1378391-50-4
Formula: C₄₃H₅₂N₆O₇
MW: 764.9 g/mol

VQ-042837

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