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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

6-Chloropyrazine-2-carbonitrile chemical structure

6-Chloropyrazine-2-carbonitrile

CAS: 6863-74-7
Formula: C₅H₂ClN₃
MW: 139.54 g/mol

VQ-022632

Reference Standard

6-Cyano-1-indanone chemical structure

6-Cyano-1-indanone

CAS: 69975-66-2
Formula: C₁₀H₇NO
MW: 157.17 g/mol

VQ-041290

Reference Standard

6-Cyano-2-(2-(4-ethyl-3-(4-morpholinopiperidin-1-yl)phenyl)propan-2-yl)-1H-indole-3-carboxylic Acid chemical structure

6-Cyano-2-(2-(4-ethyl-3-(4-morpholinopiperidin-1-yl)phenyl)propan-2-yl)-1H-indole-3-carboxylic Acid

CAS: 1256584-78-7
Formula: C₃₀H₃₆N₄O₃
MW: 500.6 g/mol

VQ-021479

Reference Standard

6-Cyclopropyl-10-fluoro-7,8-dihydrobenzo[k]phenanthridine chemical structure

6-Cyclopropyl-10-fluoro-7,8-dihydrobenzo[k]phenanthridine

CAS: 1187966-94-4
Formula: C₂₀H₁₆FN
MW: 289.3 g/mol

VQ-041529

Reference Standard

6-Cyclopropyl-10-fluorobenzo[k]phenanthridine chemical structure

6-Cyclopropyl-10-fluorobenzo[k]phenanthridine

CAS: 1187966-95-5
Formula: C₂₀H₁₄FN
MW: 287.3 g/mol

VQ-033232

Reference Standard

6-Dehydro Testosterone Undecanoate chemical structure

6-Dehydro Testosterone Undecanoate

CAS: 89635-04-1
Formula: C₃₀H₄₆O₃
MW: 454.7 g/mol

VQ-042454

Reference Standard

6-Dehydrocortisol Acetate chemical structure

6-Dehydrocortisol Acetate

CAS: 21940-45-4
Formula: C₂₃H₃₀O₆
MW: 402.5 g/mol

VQ-022809

Reference Standard

6-Deoxypenciclovir chemical structure

6-Deoxypenciclovir

CAS: 104227-86-3
Formula: C₁₀H₁₅N₅O₂
MW: 237.26 g/mol

VQ-037188

Reference Standard

6-Deoxypenciclovir hydrochloride chemical structure

6-Deoxypenciclovir hydrochloride

CAS: 246021-75-0
Formula: C₁₀H₁₆ClN₅O₂
MW: 273.72 g/mol

VQ-030662

Reference Standard

6-Desamino 6-Chloro Etravirine chemical structure

6-Desamino 6-Chloro Etravirine

CAS: 269055-76-7
Formula: C₂₀H₁₃BrClN₅O
MW: 454.7 g/mol

VQ-037160

Reference Standard

6-Desfluoro Rufinamide chemical structure

6-Desfluoro Rufinamide

CAS: 106308-41-2
Formula: C₁₀H₉FN₄O
MW: 220.2 g/mol

VQ-033699

Reference Standard

6-epi-Obeticholic Acid chemical structure

6-epi-Obeticholic Acid

CAS: 915038-27-6
Formula: C₂₆H₄₄O₄
MW: 420.6 g/mol

VQ-023308

Reference Standard

6-Epidoxycycline chemical structure

6-Epidoxycycline

CAS: 3219-99-6
Formula: C₂₂H₂₄N₂O₈
MW: 444.4 g/mol

VQ-022443

Reference Standard

6-Epidoxycycline hydrochloride chemical structure

6-Epidoxycycline hydrochloride

CAS: 41411-66-9
Formula: C₂₂H₂₅ClN₂O₈
MW: 480.9 g/mol

VQ-030310

Reference Standard

6-Ethylpyrimidin-4(3H)-one chemical structure

6-Ethylpyrimidin-4(3H)-one

CAS: 124703-78-2
Formula: C₆H₈N₂O
MW: 124.14 g/mol

VQ-036830

Reference Standard

6-Ethynyl-4,4-dimethyl-thiochroman chemical structure

6-Ethynyl-4,4-dimethyl-thiochroman

CAS: 118292-06-1
Formula: C₁₃H₁₄S
MW: 202.32 g/mol

VQ-028215

Reference Standard

6-Fluoro-2-(oxiran-2-yl)chroman chemical structure

6-Fluoro-2-(oxiran-2-yl)chroman

CAS: 99199-90-3
Formula: C₁₁H₁₁FO₂
MW: 194.2 g/mol

VQ-032074

Reference Standard

6-Fluoro-2-methylquinoline chemical structure

6-Fluoro-2-methylquinoline

CAS: 1128-61-6
Formula: C₁₀H₈FN
MW: 161.18 g/mol

VQ-035111

Reference Standard

6-Fluoro-3-(1-hydroxy-4-piperidyl)-1,2-benzoxazole chemical structure

6-Fluoro-3-(1-hydroxy-4-piperidyl)-1,2-benzoxazole

CAS: 2985481-41-0
Formula: C₁₂H₁₃FN₂O₂
MW: 236.24 g/mol

VQ-045090

Reference Standard

6-Fluorochromane-2-carboxylic acid chemical structure

6-Fluorochromane-2-carboxylic acid

CAS: 99199-60-7
Formula: C₁₀H₉FO₃
MW: 196.17 g/mol

VQ-032084

Reference Standard

6-Fluoropyrazine-2-carbonitrile chemical structure

6-Fluoropyrazine-2-carbonitrile

CAS: 356783-46-5
Formula: C₅H₂FN₃
MW: 123.09 g/mol

VQ-030682

Reference Standard

6-Formylpterin chemical structure

CAS: 712-30-1
Formula: C₇H₅N₅O₂
MW: 191.15 g/mol

VQ-025899

Reference Standard

6-Isothiocyanatoquinoxaline chemical structure

6-Isothiocyanatoquinoxaline

CAS: 135306-56-8
Formula: C₉H₅N₃S
MW: 187.22 g/mol

VQ-021883

Reference Standard

6-Keto Betamethasone chemical structure

6-Keto Betamethasone

CAS: 72559-90-1
Formula: C₂₂H₂₇FO₆
MW: 406.4 g/mol

VQ-022350

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