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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

Boc-3-Hydroxy-1-adamantyl-L-glycine chemical structure

Boc-3-Hydroxy-1-adamantyl-L-glycine

CAS: 1334321-39-9
Formula: C₁₇H₂₇NO₅
MW: 325.4 g/mol

VQ-033780

Reference Standard

Boc-3,5-dihydroxy-1-adamantyl-L-glycine chemical structure

Boc-3,5-dihydroxy-1-adamantyl-L-glycine

CAS: 681282-72-4
Formula: C₁₇H₂₇NO₆
MW: 341.4 g/mol

VQ-027991

Reference Standard

Boc-D-4,4-Biphenylalanine chemical structure

Boc-D-4,4-Biphenylalanine

CAS: 128779-47-5
Formula: C₂₀H₂₃NO₄
MW: 341.4 g/mol

VQ-042063

Reference Standard

Boc-D-serine Benzylamide chemical structure

Boc-D-serine Benzylamide

CAS: 1253790-58-7
Formula: C₁₅H₂₂N₂O₄
MW: 294.35 g/mol

VQ-031407

Reference Standard

Boc-Elacestrant chemical structure

Boc-Elacestrant

CAS: 3046121-56-3
Formula: C₃₅H₄₆N₂O₄
MW: 558.7 g/mol

VQ-036922

Reference Standard

Boc-Lys(Boc)-ONp chemical structure

Boc-Lys(Boc)-ONp

CAS: 2592-19-0
Formula: C₂₂H₃₃N₃O₈
MW: 467.5 g/mol

VQ-031704

Reference Standard

Boc-Oxytocin

CAS: 6390-51-8
Formula: C₄₈H₇₄N₁₂O₁₄S₂
MW: 1107.3 g/mol

VQ-027347

Reference Standard

Boc-Saxagliptin chemical structure

Boc-Saxagliptin

CAS: 709031-43-6
Formula: C₂₃H₃₃N₃O₄
MW: 415.5 g/mol

VQ-021340

Reference Standard

Boc-trans-4-aminocyclohexane acetic acid chemical structure

Boc-trans-4-aminocyclohexane acetic acid

CAS: 189153-10-4
Formula: C₁₃H₂₃NO₄
MW: 257.33 g/mol

VQ-029655

Reference Standard

Boc-trans-Hydroxy-L-proline chemical structure

Boc-trans-Hydroxy-L-proline

CAS: 13726-69-7
Formula: C₁₀H₁₇NO₅
MW: 231.25 g/mol

VQ-030879

Reference Standard

Boc-valbenazine chemical structure

Boc-valbenazine

CAS: 2102090-16-2
Formula: C₂₉H₄₆N₂O₆
MW: 518.7 g/mol

VQ-044978

Reference Standard

Boceprevir chemical structure

CAS: 394730-60-0
Formula: C₂₇H₄₅N₅O₅
MW: 519.7 g/mol

VQ-029468

Reference Standard

Boceprevir Metabolite M15 chemical structure

Boceprevir Metabolite M15

CAS: 1351791-45-1
Formula: C₁₉H₃₄N₄O₃
MW: 366.5 g/mol

VQ-043074

Reference Standard

Boeravinone B chemical structure

CAS: 114567-34-9
Formula: C₁₇H₁₂O₆
MW: 312.27 g/mol

VQ-039790

Reference Standard

Boldenone Undecylenate chemical structure

Boldenone Undecylenate

CAS: 13103-34-9
Formula: C₃₀H₄₄O₃
MW: 452.7 g/mol

VQ-043075

Reference Standard

Boldine chemical structure

CAS: 476-70-0
Formula: C₁₉H₂₁NO₄
MW: 327.4 g/mol

VQ-029469

Reference Standard

Boldine EP Impurity B

Boldine EP Impurity B

CAS: 937018-76-3
Formula: C₁₉H₂₁NO₅
MW: 343.38 g/mol

VQ-035378

Reference Standard

Boldine EP Impurity C chemical structure

Boldine EP Impurity C

CAS: 5890-18-6
Formula: C₁₈H₁₉NO₄
MW: 313.3 g/mol

VQ-045214

Reference Standard

Boldine EP Impurity D chemical structure

Boldine EP Impurity D

CAS: 2169-44-0
Formula: C₂₀H₂₃NO₄
MW: 341.4 g/mol

VQ-035388

Reference Standard

Bortezomib Amide analog (Mixture of isomers)

Bortezomib Amide analog (Mixture of isomers)

CAS: 2748159-75-1
Formula: C₁₄H₁₄N₄O₂
MW: 270.29 g/mol

VQ-029474

Reference Standard

Bortezomib Amino R Isomer (Freebase) chemical structure

Bortezomib Amino R Isomer (Freebase)

CAS: 179324-86-8
Formula: C₁₅H₂₈BNO₂
MW: 265.2 g/mol

VQ-004532

Reference Standard

Bortezomib Amino R Isomer (TFA salt) chemical structure

Bortezomib Amino R Isomer (TFA salt)

CAS: 179324-87-9
Formula: C₁₇H₂₉BF₃NO₄
MW: 379.2 g/mol

In stock

Reference Standard

Bortezomib D-mannitol chemical structure

Bortezomib D-mannitol

CAS: 444576-08-3
Formula: C₂₅H₃₅BN₄O₈
MW: 530.4 g/mol

VQ-029475

Reference Standard

Bortezomib Diastereomer (R,R-Isomer) chemical structure

Bortezomib Diastereomer (R,R-Isomer)

CAS: 1132709-15-9
Formula: C₁₉H₂₅BN₄O₄
MW: 384.2 g/mol

VQ-004534

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