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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

Nebivolol Des-Fluoro Impurity chemical structure

Nebivolol Des-Fluoro Impurity

CAS: 99199-99-2
Formula: C₁₁H₁₂O₂
MW: 176.21 g/mol

VQ-026846

Reference Standard

Nebivolol Ethanol Impurity chemical structure

Nebivolol Ethanol Impurity

CAS: 1017878-67-9
Formula: C₁₁H₁₂ClFO₂
MW: 230.66 g/mol

VQ-032090

Reference Standard

Nebivolol Impurity 1 chemical structure

Nebivolol Impurity 1

CAS: 1346562-34-2
Formula: C₁₂H₁₇NO₂
MW: 207.27 g/mol

VQ-032079

Reference Standard

Nebivolol Impurity 12 (RR,RR)

Nebivolol Impurity 12 (RR,RR)

CAS: 920275-25-8
Formula: C₂₂H₂₆ClF₂NO₄
MW: 441.9 g/mol

VQ-038564

Reference Standard

Nebivolol Impurity 13

Nebivolol Impurity 13

CAS: 1004264-71-4
Formula: C₁₆H₁₈ClFO₄
MW: 328.76 g/mol

VQ-049206

Reference Standard

Nebivolol Impurity 2 HCl (SR,RS) chemical structure

Nebivolol Impurity 2 HCl (SR,RS)

CAS: 920275-19-0
Formula: C₂₂H₂₆ClF₂NO₄
MW: 441.9 g/mol

VQ-032086

Reference Standard

Nebivolol Impurity 26 chemical structure

Nebivolol Impurity 26

CAS: 1803397-45-6
Formula: C₂₉H₃₂ClF₂NO₄
MW: 532 g/mol

VQ-044127

Reference Standard

Nebivolol Impurity 5 chemical structure

Nebivolol Impurity 5

CAS: 99199-91-4
Formula: C₁₈H₂₀FNO₂
MW: 301.4 g/mol

VQ-032081

Reference Standard

Nebivolol Impurity 5 (RRSR) (HCl)

Nebivolol Impurity 5 (RRSR) (HCl)

CAS: 920275-20-3
Formula: C₂₂H₂₅F₂NO₄ : HCl
MW: 441.9 g/mol

VQ-038563

Reference Standard

Nebivolol Impurity 64 chemical structure

Nebivolol Impurity 64

CAS: 620176-90-1
Formula: C₁₁H₁₁FO₂
MW: 194.2 g/mol

VQ-049204

Reference Standard

Nebramine chemical structure

CAS: 34051-04-2
Formula: C₁₂H₂₆N₄O₅
MW: 306.36 g/mol

VQ-021353

Reference Standard

Nebramine Disulfate chemical structure

Nebramine Disulfate

CAS: 71122-29-7
Formula: C₁₂H₂₆N₄O₅
MW: 306.36 g/mol

VQ-028414

Reference Standard

Nefopam HCL Impurity D chemical structure

Nefopam HCL Impurity D

CAS: 13831-42-0
Formula: C₁₇H₂₁NO
MW: 255.35 g/mol

VQ-023222

Reference Standard

Nelarabine regio isomer impurity chemical structure

Nelarabine regio isomer impurity

CAS: 1233127-29-1
Formula: C₁₁H₁₅N₅O₅
MW: 297.27 g/mol

VQ-032094

Reference Standard

Nelarabine α-isomer impurity chemical structure

Nelarabine α-isomer impurity

CAS: 1305196-84-2
Formula: C₁₁H₁₅N₅O₅
MW: 297.27 g/mol

VQ-032095

Reference Standard

Nemadectin chemical structure

CAS: 102130-84-7
Formula: C₃₆H₅₂O₈
MW: 612.8 g/mol

VQ-038507

Reference Standard

Neomycin C chemical structure

CAS: 66-86-4
Formula: C₂₃H₄₆N₆O₁₃
MW: 614.6 g/mol

VQ-032098

Reference Standard

Neopentyl Ketal Impurity chemical structure

Neopentyl Ketal Impurity

CAS: 88128-57-8
Formula: C₁₀H₁₉ClO₂
MW: 206.71 g/mol

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Reference Standard

Neoponcirin chemical structure

CAS: 14259-47-3
Formula: C₂₈H₃₄O₁₄
MW: 594.6 g/mol

VQ-030191

Reference Standard

Neoponcirin(Mixture of diastereomers) chemical structure

Neoponcirin(Mixture of diastereomers)

CAS: 2418540-64-2
Formula: C₂₈H₃₄O₁₄
MW: 594.6 g/mol

VQ-036728

Reference Standard

Neosamine B chemical structure

CAS: 527-10-6
Formula: C₆H₁₄N₂O₄
MW: 178.19 g/mol

VQ-045247

Reference Standard

Neostigmine Impurity 13 Metilsulfate chemical structure

Neostigmine Impurity 13 Metilsulfate

CAS: 64050-77-7
Formula: C₁₂H₂₀N₂O₆S
MW: 320.36 g/mol

VQ-045340

Reference Standard

Neostigmine Impurity 14 Metilsulfate chemical structure

Neostigmine Impurity 14 Metilsulfate

CAS: 64051-18-9
Formula: C₁₁H₁₈N₂O₆S
MW: 306.34 g/mol

VQ-045341

Reference Standard

Neostigmine Methyl Sulfate - Impurity A (Bromide Salt) chemical structure

Neostigmine Methyl Sulfate - Impurity A (Bromide Salt)

CAS: 1620-19-5
Formula: C₉H₁₄BrNO
MW: 232.12 g/mol

VQ-044425

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