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Impurities & Reference Standards

Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.

28,554products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,252 Pharmacopeial Impurities (EP / USP / BP) 4,401 Nitrosamine Impurities 650 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,612 Metabolites & Degradation Products 4,146 API Reference Standards 3,493

Reference Standard

Fosfomycin Trometamol EP Impurity B chemical structure

Fosfomycin Trometamol EP Impurity B

CAS: 1262243-11-7
Formula: C₇H₁₈NO₇P
MW: 259.19 g/mol

VQ-025917

Reference Standard

Fosfomycin Trometamol EP Impurity C chemical structure

Fosfomycin Trometamol EP Impurity C

CAS: 23001-39-0
Formula: C₄H₁₂NO₆P
MW: 201.12 g/mol

VQ-025916

Reference Standard

Fosfomycin Trometamol EP Impurity D chemical structure

Fosfomycin Trometamol EP Impurity D

CAS: 1262243-12-8
Formula: C₁₀H₂₅NO₁₁P₂
MW: 397.25 g/mol

VQ-025914

Reference Standard

Fosfructose Trisodium Octahydrate chemical structure

Fosfructose Trisodium Octahydrate

CAS: 81028-91-3
Formula: C₆H₂₇Na₃O₂₀P₂
MW: 550.18 g/mol

VQ-019601

Reference Standard

Fosinopril EP Impurity A chemical structure

Fosinopril EP Impurity A

CAS: 95399-71-6
Formula: C₂₃H₃₄NO₅P
MW: 435.5 g/mol

VQ-025921

Reference Standard

Fosinopril EP Impurity B chemical structure

Fosinopril EP Impurity B

CAS: 1910773-95-3
Formula: C₃₀H₄₆NO₇P
MW: 563.7 g/mol

VQ-037430

Reference Standard

Fosinopril EP Impurity C chemical structure

Fosinopril EP Impurity C

CAS: 474519-28-3
Formula: C₃₀H₄₆NO₇P
MW: 563.7 g/mol

VQ-030878

Reference Standard

Fosinopril EP Impurity D chemical structure

Fosinopril EP Impurity D

CAS: 1356446-78-0
Formula: C₃₀H₄₆NO₇P
MW: 563.7 g/mol

VQ-037431

Reference Standard

Fosinopril EP Impurity I chemical structure

Fosinopril EP Impurity I

CAS: 123599-78-0
Formula: C₁₉H₂₉O₆P
MW: 384.4 g/mol

VQ-030881

Reference Standard

Fosinopril EP Impurity I chemical structure

Fosinopril EP Impurity I

CAS: 123599-82-6
Formula: C₁₉H₂₉O₆P
MW: 384.4 g/mol

VQ-037433

Reference Standard

Fosinopril sodium chemical structure

Fosinopril sodium

CAS: 88889-14-9
Formula: C₃₀H₄₅NNaO₇P
MW: 585.6 g/mol

VQ-025920

Reference Standard

Fosnetupitant chemical structure

CAS: 1703748-89-3
Formula: C₃₁H₃₅F₆N₄O₅P
MW: 688.6 g/mol

VQ-025922

Reference Standard

Fosphenytoin EP Impurity E chemical structure

Fosphenytoin EP Impurity E

CAS: 93360-08-8
Formula: C₃₀H₂₇N₂O₆P
MW: 542.5 g/mol

VQ-048469

Reference Standard

Fosphenytoin Impurity D chemical structure

Fosphenytoin Impurity D

CAS: 21616-46-6
Formula: C₁₆H₁₄N₂O₃
MW: 282.29 g/mol

VQ-030883

Reference Standard

Fosphenytoin Sodium chemical structure

Fosphenytoin Sodium

CAS: 92134-98-0
Formula: C₁₆H₁₃N₂Na₂O₆P
MW: 406.24 g/mol

VQ-030882

Reference Standard

Fosravuconazole chemical structure

Fosravuconazole

CAS: 351227-64-0
Formula: C₂₃H₂₀F₂N₅O₅PS
MW: 547.5 g/mol

VQ-025924

Reference Standard

Fosravuconazole Amide Impurity

Fosravuconazole Amide Impurity

CAS: 942415-34-1
Formula: C₂₇H₃₀F₂N₅O₆PS
MW: 621.6 g/mol

VQ-025923

Reference Standard

Fosravuconazole L-Lysine Ethanolate chemical structure

Fosravuconazole L-Lysine Ethanolate

CAS: 914361-45-8
Formula: C₃₁H₄₀F₂N₇O₈PS
MW: 739.7 g/mol

VQ-030885

Reference Standard

Fostamatinib chemical structure

CAS: 901119-35-5
Formula: C₂₃H₂₆FN₆O₉P
MW: 580.5 g/mol

VQ-007490

Reference Standard

Fostamatinib Disodium chemical structure

Fostamatinib Disodium

CAS: 1025687-58-4
Formula: C₂₃H₃₆FN₆Na₂O₁₅P
MW: 732.5 g/mol

In stock

Reference Standard

Fostemsavir chemical structure

CAS: 864953-29-7
Formula: C₂₅H₂₆N₇O₈P
MW: 583.5 g/mol

VQ-030888

Reference Standard

Fostemsavir bromophenylsulfonyl Impurity chemical structure

Fostemsavir bromophenylsulfonyl Impurity

CAS: 1449413-27-7
Formula: C₂₀H₁₇BrN₂O₆S₂
MW: 525.4 g/mol

VQ-037435

Reference Standard

Fostemsavir Ter-Butyl Phosphate chemical structure

Fostemsavir Ter-Butyl Phosphate

CAS: 864953-38-8
Formula: C₃₃H₄₂N₇O₈P
MW: 695.7 g/mol

VQ-037436

Reference Standard

Fostemsavir Tromethamine chemical structure

Fostemsavir Tromethamine

CAS: 864953-39-9
Formula: C₂₉H₃₇N₈O₁₁P
MW: 704.6 g/mol

VQ-048472

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