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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

14,098products

1,516in stock

COA + SDSwith every lot

Reference Standard

Quinapril Impurity-I(stage-I) chemical structure

Quinapril Impurity-I(stage-I)

CAS: 74094-05-6
Formula: C₁₀H₁₂O₃
MW: 180.2 g/mol

In stock

Reference Standard

Quinapril Methyl Ester chemical structure

Quinapril Methyl Ester

CAS: 118194-43-7
Formula: C₂₄H₂₈N₂O₅
MW: 424.5 g/mol

VQ-023597

Reference Standard

Quinidine chemical structure

CAS: 56-54-2
Formula: C₂₀H₂₄N₂O₂
MW: 324.4 g/mol

VQ-027704

Reference Standard

Quinidine Sulfate Dihydrate chemical structure

Quinidine Sulfate Dihydrate

CAS: 6591-63-5
Formula: C₄₀H₅₄N₄O₁₀S
MW: 782.9 g/mol

VQ-027703

Reference Standard

Quininone chemical structure

CAS: 84-31-1
Formula: C₂₀H₂₂N₂O₂
MW: 322.4 g/mol

VQ-027707

Reference Standard

Quinocide chemical structure

CAS: 525-61-1
Formula: C₁₅H₂₁N₃O
MW: 259.35 g/mol

VQ-027627

Reference Standard

R 2 tert butyloxycarbonylamino pentane 1 5 diol chemical structure

R 2 tert butyloxycarbonylamino pentane 1 5 diol

CAS: 397246-12-7
Formula: C₁₀H₂₁NO₄
MW: 219.28 g/mol

VQ-038048

Reference Standard

R 4 tert butoxycarbonyl 1 4 oxazepane 2 carboxylic acid chemical structure

R 4 tert butoxycarbonyl 1 4 oxazepane 2 carboxylic acid

CAS: 1273566-86-1
Formula: C₁₁H₁₉NO₅
MW: 245.27 g/mol

VQ-047611

Reference Standard

R Isomer Of Saxagliptin Amide chemical structure

R Isomer Of Saxagliptin Amide

CAS: 1133811-49-0
Formula: C₆H₁₀N₂O
MW: 126.16 g/mol

VQ-044165

Reference Standard

R-(+)-Nicotine chemical structure

CAS: 25162-00-9
Formula: C₁₀H₁₄N₂
MW: 162.23 g/mol

VQ-038613

Reference Standard

R-1,2,3,4-Tetrahydro-3-Isoquinolinecarboxylic Acid chemical structure

R-1,2,3,4-Tetrahydro-3-Isoquinolinecarboxylic Acid

CAS: 103733-65-9
Formula: C₁₀H₁₁NO₂
MW: 177.2 g/mol

VQ-032602

Reference Standard

R-2-Amino Butanamide Hydrochloride chemical structure

R-2-Amino Butanamide Hydrochloride

CAS: 103765-03-3
Formula: C₄H₁₁ClN₂O
MW: 138.59 g/mol

VQ-027169

Reference Standard

R-alpha-Lipoic acid tromethamine salt chemical structure

R-alpha-Lipoic acid tromethamine salt

CAS: 14358-90-8
Formula: C₁₂H₂₅NO₅S₂
MW: 327.5 g/mol

VQ-039470

Reference Standard

R-Amisulpride chemical structure

CAS: 71675-90-6
Formula: C₁₇H₂₇N₃O₄S
MW: 369.5 g/mol

VQ-029117

Reference Standard

R-Amlodipine chemical structure

CAS: 103129-81-3
Formula: C₂₀H₂₅ClN₂O₅
MW: 408.9 g/mol

VQ-024254

Reference Standard

R-Avanafil chemical structure

CAS: 1638497-26-3
Formula: C₂₃H₂₆ClN₇O₃
MW: 483.9 g/mol

VQ-029289

Reference Standard

R-Avapritinib chemical structure

CAS: 1703793-32-1
Formula: C₂₆H₂₇FN₁₀
MW: 498.6 g/mol

VQ-047490

Reference Standard

R-Chlorpheniramine Maleate chemical structure

R-Chlorpheniramine Maleate

CAS: 23095-76-3
Formula: C₂₀H₂₃ClN₂O₄
MW: 390.9 g/mol

VQ-022154

Reference Standard

R-Clopidogrel Carboxylic Acid chemical structure

R-Clopidogrel Carboxylic Acid

CAS: 324757-50-8
Formula: C₁₅H₁₄ClNO₂S
MW: 307.8 g/mol

VQ-025062

Reference Standard

R-Frovatriptan chemical structure

CAS: 158747-02-5
Formula: C₁₄H₁₇N₃O
MW: 243.3 g/mol

VQ-034843

Reference Standard

R-Isomer of LCB5 (Freebase)

R-Isomer of LCB5 (Freebase)

CAS: 141109-23-1
Formula: C₁₅H₁₆ClNO₂S
MW: 309.81 g/mol

VQ-005680

Reference Standard

R-Isomer of LCB5/CLB1 chemical structure

R-Isomer of LCB5/CLB1

CAS: 1258938-54-3
Formula: C₁₅H₁₇Cl₂NO₂S
MW: 346.3 g/mol

In stock

Reference Standard

R-Ivabradine chemical structure

CAS: 167072-91-5
Formula: C₂₇H₃₆N₂O₅
MW: 468.6 g/mol

VQ-031332

Reference Standard

R-Mirtazapine chemical structure

CAS: 61364-37-2
Formula: C₁₇H₁₉N₃
MW: 265.35 g/mol

VQ-035145

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