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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

(R)-N-(3-Chloro-4-fluorophenyl)-6-nitro-7-((tetrahydrofuran-3-yl)oxy)quinazolin-4-amine chemical structure

(R)-N-(3-Chloro-4-fluorophenyl)-6-nitro-7-((tetrahydrofuran-3-yl)oxy)quinazolin-4-amine

CAS: 402855-07-6
Formula: C₁₈H₁₄ClFN₄O₄
MW: 404.8 g/mol

VQ-028904

Reference Standard

(R)-N-(3,4-Dimethoxybenzyl)-1-phenylethanamine chemical structure

(R)-N-(3,4-Dimethoxybenzyl)-1-phenylethanamine

CAS: 134430-93-6
Formula: C₁₇H₂₁NO₂
MW: 271.35 g/mol

VQ-031036

Reference Standard

(R)-N-Allyl-1-aminoindane chemical structure

(R)-N-Allyl-1-aminoindane

CAS: 1166392-42-2
Formula: C₁₂H₁₅N
MW: 173.25 g/mol

VQ-033471

Reference Standard

(R)-N-Benzyl-1-(1-naphthyl)ethylamine chemical structure

(R)-N-Benzyl-1-(1-naphthyl)ethylamine

CAS: 66469-40-7
Formula: C₁₉H₁₉N
MW: 261.4 g/mol

VQ-022185

Reference Standard

(R)-N-Benzyl-1-(4-methoxyphenyl)propan-2-amine chemical structure

(R)-N-Benzyl-1-(4-methoxyphenyl)propan-2-amine

CAS: 67346-60-5
Formula: C₁₇H₂₁NO
MW: 255.35 g/mol

VQ-047439

Reference Standard

(R)-N-Formyl Octabase chemical structure

(R)-N-Formyl Octabase

CAS: 51773-23-0
Formula: C₁₈H₂₃NO₂
MW: 285.4 g/mol

VQ-030160

Reference Standard

(R)-N-Methyl-1-(Naphthalen-1-yl)ethanamine chemical structure

(R)-N-Methyl-1-(Naphthalen-1-yl)ethanamine

CAS: 15297-33-3
Formula: C₁₃H₁₅N
MW: 185.26 g/mol

VQ-036315

Reference Standard

(R)-N-Methyl-Laudanosine chemical structure

(R)-N-Methyl-Laudanosine

CAS: 732929-47-4
Formula: C₂₂H₃₀NO₄⁺
MW: 372.5 g/mol

VQ-029271

Reference Standard

(R)-N-Methyl-Laudanosine Iodide chemical structure

(R)-N-Methyl-Laudanosine Iodide

CAS: 41431-32-7
Formula: C₂₂H₃₀INO₄
MW: 499.4 g/mol

VQ-029270

Reference Standard

(R)-Ofloxacin chemical structure

CAS: 100986-86-5
Formula: C₁₈H₂₀FN₃O₄
MW: 361.4 g/mol

VQ-022969

Reference Standard

(R)-Ofloxacin Carboxylic Acid (Dextrofloxacin Difluoro Impurity) chemical structure

(R)-Ofloxacin Carboxylic Acid (Dextrofloxacin Difluoro Impurity)

CAS: 110548-07-7
Formula: C₁₃H₉F₂NO₄
MW: 281.21 g/mol

VQ-031528

Reference Standard

(R)-Omeprazole chemical structure

CAS: 119141-89-8
Formula: C₁₇H₁₉N₃O₃S
MW: 345.4 g/mol

VQ-030559

Reference Standard

(R)-Pantoic Acid Sodium Salt chemical structure

(R)-Pantoic Acid Sodium Salt

CAS: 60979-68-2
Formula: C₆H₁₁NaO₄
MW: 170.14 g/mol

VQ-022352

Reference Standard

(R)-Phenylephrine 3-O-Sulfate chemical structure

(R)-Phenylephrine 3-O-Sulfate

CAS: 1242184-39-9
Formula: C₉H₁₃NO₅S
MW: 247.27 g/mol

VQ-042037

Reference Standard

(R)-Pyrrolidine-2-carbonitrile Hydrochloride chemical structure

(R)-Pyrrolidine-2-carbonitrile Hydrochloride

CAS: 675602-84-3
Formula: C₅H₉ClN₂
MW: 132.59 g/mol

VQ-039094

Reference Standard

(R)-Quinuclidinyl Benzoyl Solifenacin chemical structure

(R)-Quinuclidinyl Benzoyl Solifenacin

CAS: 1956436-64-8
Formula: C₂₃H₂₆N₂O₃
MW: 378.5 g/mol

VQ-028079

Reference Standard

(R)-Sitagliptin Methyl-Ester Hydrochloride chemical structure

(R)-Sitagliptin Methyl-Ester Hydrochloride

CAS: 1374985-05-3
Formula: C₁₁H₁₃ClF₃NO₂
MW: 283.67 g/mol

VQ-028055

Reference Standard

(R)-Sitagliptin Methyl-Ester Impurity chemical structure

(R)-Sitagliptin Methyl-Ester Impurity

CAS: 881995-69-3
Formula: C₁₁H₁₂F₃NO₂
MW: 247.21 g/mol

VQ-023763

Reference Standard

(R)-Sitagliptin N-Boc-Acid Impurity chemical structure

(R)-Sitagliptin N-Boc-Acid Impurity

CAS: 486460-00-8
Formula: C₁₅H₁₈F₃NO₄
MW: 333.3 g/mol

In stock

Reference Standard

(R)-Sitagliptin N-Boc-Methyl-Ester Impurity chemical structure

(R)-Sitagliptin N-Boc-Methyl-Ester Impurity

CAS: 881995-73-9
Formula: C₁₆H₂₀F₃NO₄
MW: 347.33 g/mol

VQ-028059

Reference Standard

(R)-Sofosbuvir Pentafluorophenoxy Analogue chemical structure

(R)-Sofosbuvir Pentafluorophenoxy Analogue

CAS: 1334513-02-8
Formula: C₁₈H₁₇F₅NO₅P
MW: 453.3 g/mol

VQ-023775

Reference Standard

(R)-tert-Butyl (4-(1H-imidazol-1-yl)-4-oxo-1-(2,4,5-trifluorophenyl)butan-2-yl)carbamate chemical structure

(R)-tert-Butyl (4-(1H-imidazol-1-yl)-4-oxo-1-(2,4,5-trifluorophenyl)butan-2-yl)carbamate

CAS: 1364122-90-6
Formula: C₁₈H₂₀F₃N₃O₃
MW: 383.4 g/mol

VQ-028058

Reference Standard

(R)-tert-Butyl 1-benzylpiperidin-3-ylcarbamate chemical structure

(R)-tert-Butyl 1-benzylpiperidin-3-ylcarbamate

CAS: 454713-13-4
Formula: C₁₇H₂₆N₂O₂
MW: 290.4 g/mol

VQ-026477

Reference Standard

(R)-tert-Butyl 3-(4-Aminophenyl)piperidine-1-carboxylate chemical structure

(R)-tert-Butyl 3-(4-Aminophenyl)piperidine-1-carboxylate

CAS: 1263284-59-8
Formula: C₁₆H₂₄N₂O₂
MW: 276.37 g/mol

VQ-026924

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