Collection: Impurity Standards
QuantiMol impurity standards include related compounds, degradation products, process impurities, isomers, residuals, and pharmaceutical impurity materials. These products support analytical research, method validation, impurity profiling, and quality control studies.
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4-Chlorobenzhydrol (Standard) [CAS 119-56-2]
CAS: 119-56-2 | SKU: QM-0050896 | Size: 1 Each Price on request -
4-Chlorobutan-1-amine hydrochloride [CAS 6435-84-3]
CAS: 6435-84-3 | SKU: QM-0050390 | Size: 1 Each Price on request -
4-Chloro-7-ethoxyquinoline [CAS 178984-50-4]
CAS: 178984-50-4 | SKU: QM-0049864 | Size: 1 Each Price on request -
4-Chloroquinaldine [CAS 4295-06-1]
CAS: 4295-06-1 | SKU: QM-0048597-01 | Size: 5 g£57.09 GBP -
4-Chlorotetrahydro-2H-pyran [CAS 1768-64-5]
CAS: 1768-64-5 | SKU: QM-0048533-01 | Size: 1 g£57.09 GBP -
4-Chloro-3-sulfamoylbenzoic acid [CAS 1205-30-7]
CAS: 1205-30-7 | SKU: QM-0048210-01 | Size: 25 g£51.91 GBP -
4-Chlorophenylacetic acid (Standard) [CAS 1878-66-6]
CAS: 1878-66-6 | SKU: QM-0047980-01 | Size: 25 mg£53.98 GBP -
4-Chloroindole-3-acetic acid (Standard) [CAS 2519-61-1]
CAS: 2519-61-1 | SKU: QM-0047699 | Size: 1 Each Price on request -
4-Chlorobenzophenone (Standard) [CAS 134-85-0]
CAS: 134-85-0 | SKU: QM-0047605 | Size: 1 Each Price on request -
4-Chlorothreonine [CAS 142698-80-4]
CAS: 142698-80-4 | SKU: QM-0023022 | Size: 1 Each Price on request -
4-Fluoro-2-Methoxy-5-Nitroaniline [CAS 1075705-01-9]
CAS: 1075705-01-9 | SKU: QM-0017813-01 | Size: 5 g£51.91 GBP -
4-Fluoro-5-isopropyl-2-methoxyphenylboronic acid [CAS 875446-29-0]
CAS: 875446-29-0 | SKU: QM-0017719-01 | Size: 250 mg£51.91 GBP -
4-Chloro-3-methylisoxazol-5-amine [CAS 166964-09-6]
CAS: 166964-09-6 | SKU: QM-0017527-01 | Size: 1 g£51.91 GBP -
4-Chloro-5-nitro-1-tosyl-1H-pyrrolo[2,3-b]pyridine [CAS 1421338-17-1]
CAS: 1421338-17-1 | SKU: QM-0017354-01 | Size: 1 g£59.16 GBP -
4-Chlorobenzoic acid (Standard) [CAS 74-11-3]
CAS: 74-11-3 | SKU: QM-0017192-01 | Size: 10 mg£42.09 GBP -
4-Chloro-6-fluoroquinazoline [CAS 16499-61-9]
CAS: 16499-61-9 | SKU: QM-0017037-01 | Size: 250 mg£55.02 GBP -
4-Chlorophenyl-2-pyridinylmethanol [CAS 27652-89-7]
CAS: 27652-89-7 | SKU: QM-0016993-01 | Size: 1 g£188.51 GBP -
4-Chloro-7-fluoropyrrolo[1,2-a]quinoxaline [CAS 136773-69-8]
CAS: 136773-69-8 | SKU: QM-0016907-01 | Size: 5 mg£238.32 GBP -
4-Chloro-6,7-dimethoxyquinoline [CAS 35654-56-9]
CAS: 35654-56-9 | SKU: QM-0016807-01 | Size: 5 g£65.37 GBP -
4-Chloronaphthalimide [CAS 39061-32-0]
CAS: 39061-32-0 | SKU: QM-0016338 | Size: 1 Each Price on request -
4-Chloro-N, N-diethylpentedrone (hydrochloride)
SKU: QM-0013617 | Size: 1 Each Price on request -
4-Fluoro PV8 (hydrochloride) [CAS 2748485-01-8]
CAS: 2748485-01-8 | SKU: QM-0010189-01 | Size: 1 mg£381.69 GBP -
4-Chloroethamphetamine (hydrochloride) [CAS 54779-54-3]
CAS: 54779-54-3 | SKU: QM-0009544-01 | Size: 1 mg£307.58 GBP -
4-Fluoro PV9 (hydrochloride) [CAS 2117405-40-8]
CAS: 2117405-40-8 | SKU: QM-0006746-01 | Size: 1 mg£381.69 GBP -
4-Fluoro pentedrone (hydrochloride) [CAS 2469350-88-5]
CAS: 2469350-88-5 | SKU: QM-0006742-01 | Size: 1 mg£381.69 GBP -
4-Chlorocatechol (Standard) [CAS 2138-22-9]
CAS: 2138-22-9 | SKU: QM-0005983-01 | Size: 10 mg£60.19 GBP -
4-Fluoro phenibut (hydrochloride) [CAS 1858241-03-8]
CAS: 1858241-03-8 | SKU: QM-0004391-01 | Size: 1 mg£118.38 GBP -
4-Chlorophenylacetic acid [CAS 1878-66-6]
CAS: 1878-66-6 | SKU: QM-0203403-01 | Size: 100 g£51.91 GBP -
4-Chlorokynurenine [CAS 153152-32-0]
CAS: 153152-32-0 | SKU: QM-0136297-01 | Size: 5 mg£678.15 GBP -
4-Chlorophenylguanidine (hydrochloride) [CAS 14279-91-5]
CAS: 14279-91-5 | SKU: QM-0079819-01 | Size: 5 mg£62.26 GBP -
4-Chlorocinnamic acid [CAS 1615-02-7]
CAS: 1615-02-7 | SKU: QM-0200906-01 | Size: 10 g£36.91 GBP -
4-Demethyldeoxypodophyllotoxin [CAS 3590-93-0]
CAS: 3590-93-0 | SKU: QM-0163637-01 | Size: 1 mg£200.66 GBP -
4-Chlorobenzoic acid [CAS 74-11-3]
CAS: 74-11-3 | SKU: QM-0156143-01 | Size: 25 g£51.91 GBP -
4-Chlorosalicylic acid [CAS 5106-98-9]
CAS: 5106-98-9 | SKU: QM-0197125-01 | Size: 50 g£60.19 GBP -
4-Ethylphenyl sulfate [CAS 85734-98-1]
CAS: 85734-98-1 | SKU: QM-0196514 | Size: 1 Each Price on request -
4-Chloroguaiacol [CAS 16766-30-6]
CAS: 16766-30-6 | SKU: QM-0196484-01 | Size: 1 g£51.91 GBP -
4-Chloro-7-azaindole [CAS 55052-28-3]
CAS: 55052-28-3 | SKU: QM-0075378-01 | Size: 10 g£51.91 GBP -
4-Chloro-6,7-dimethoxyquinazoline [CAS 13790-39-1]
CAS: 13790-39-1 | SKU: QM-0194701-01 | Size: 5 g£51.91 GBP -
4-Chloro-6,7-bis (2-methoxyethoxy) quinazoline [CAS 183322-18-1]
CAS: 183322-18-1 | SKU: QM-0193970-01 | Size: 5 g£36.91 GBP -
4-Chloropyridine (hydrochloride) [CAS 7379-35-3]
CAS: 7379-35-3 | SKU: QM-0191612-01 | Size: 50 g£51.91 GBP -
4-Chloro-3-nitrobenzoic acid [CAS 96-99-1]
CAS: 96-99-1 | SKU: QM-0155694-01 | Size: 100 g£51.91 GBP -
4-Fluoro-2,1,3-benzoxadiazole [CAS 29270-55-1]
CAS: 29270-55-1 | SKU: QM-0160561-01 | Size: 100 mg£67.44 GBP -
4-Chloro-L-phenylalanine [CAS 14173-39-8]
CAS: 14173-39-8 | SKU: QM-0187678-01 | Size: 1 g£51.91 GBP -
4-Chloroquinoline [CAS 611-35-8]
CAS: 611-35-8 | SKU: QM-0186290-01 | Size: 5 g£51.91 GBP -
4-Chlorobenzoic acid-d4 [CAS 85577-25-9]
CAS: 85577-25-9 | SKU: QM-0186062-01 | Size: 5 mg£188.51 GBP -
4-Chlorobenzyl cyanide [CAS 140-53-4]
CAS: 140-53-4 | SKU: QM-0075910-01 | Size: 100 g£51.91 GBP -
4-Chlorocatechol [CAS 2138-22-9]
CAS: 2138-22-9 | SKU: QM-0144503-01 | Size: 500 mg£51.91 GBP -
4-Chlorophenylurea [CAS 140-38-5]
CAS: 140-38-5 | SKU: QM-0143006 | Size: 1 g£36.91 GBP -
4-Fluoro-N-methylbenzylamine [CAS 405-66-3]
CAS: 405-66-3 | SKU: QM-0177445-01 | Size: 5 g£62.26 GBP -
4-Fluoro-2-methylphenylboronic acid [CAS 139911-29-8]
CAS: 139911-29-8 | SKU: QM-0155934-01 | Size: 10 g£51.91 GBP -
4-Chloro-3-indolyl β-D-galactopyranoside [CAS 135313-63-2]
CAS: 135313-63-2 | SKU: QM-0135691 | Size: 1 Each Price on request -
4-Fluoro BZP (hydrochloride) [CAS 199672-06-5]
CAS: 199672-06-5 | SKU: QM-0134750-01 | Size: 25 mg£240.75 GBP -
4-Deoxy-3’-deoxy-3’-fluoro uridine
SKU: QM-0070989 | Size: 1 Each Price on request -
4-Chlorosalicylic acid (Standard) [CAS 5106-98-9]
CAS: 5106-98-9 | SKU: QM-0131547-01 | Size: 50 mg£67.44 GBP -
4-Chlorothiobenzamide-d4 [CAS 1219802-58-0]
CAS: 1219802-58-0 | SKU: QM-0130207 | Size: 1 mg Price on request -
4-Chloro-7- (2-deoxy-β-D-erythro-pentofuranosyl) -7H-pyrrolo[2,3-d]pyrimidine [CAS 97337-37-6]
CAS: 97337-37-6 | SKU: QM-0070451 | Size: 1 Each Price on request -
4-Chlorobenzen-2,3,5,6-D4-amine [CAS 191656-33-4]
CAS: 191656-33-4 | SKU: QM-0124663-01 | Size: 5 mg£254.12 GBP -
4-Chloroindole-3-acetic acid [CAS 2519-61-1]
CAS: 2519-61-1 | SKU: QM-0123589-01 | Size: 250 mg£48.29 GBP -
4-Fluoro-N, N-diisopropylbenzamide-d4 [CAS 3047412-98-3]
CAS: 3047412-98-3 | SKU: QM-0123576 | Size: 1 Each Price on request -
4-Demethyltraxillaside [CAS 1691201-82-7]
CAS: 1691201-82-7 | SKU: QM-0062372-01 | Size: 1 mg£678.15 GBP -
4-Chloro-7- (2-β-C-methyl-β-D-ribofuranosyl) -7H-pyrrolo[2,3-d] pyrimidine [CAS 443642-33-9]
CAS: 443642-33-9 | SKU: QM-0070381 | Size: 1 Each Price on request -
4-Chlorophenoxyacetic acid (sodium) (Standard) [CAS 13730-98-8]
CAS: 13730-98-8 | SKU: QM-0121173-01 | Size: 250 mg£59.16 GBP -
4-Chlorophenoxyacetic acid (4-CPA) (Standard) [CAS 122-88-3]
CAS: 122-88-3 | SKU: QM-0120910-01 | Size: 25 mg£53.98 GBP -
4-fluoro MBZP [CAS 144734-44-1]
CAS: 144734-44-1 | SKU: QM-0120867 | Size: 1 Each Price on request -
4-Chlorobenzamide-d4 [CAS 1219794-65-6]
CAS: 1219794-65-6 | SKU: QM-0120774 | Size: 1 mg Price on request -
4-Fluoro-3-nitrobenzaldehyde [CAS 42564-51-2]
CAS: 42564-51-2 | SKU: QM-0120756 | Size: 25 g£51.91 GBP -
4-Fluoro-DL-glutamic acid [CAS 2708-77-2]
CAS: 2708-77-2 | SKU: QM-0120272 | Size: 1 Each Price on request -
4-Deoxy-4-fluoro-D-glucose [CAS 29218-07-3]
CAS: 29218-07-3 | SKU: QM-0120204-01 | Size: 10 mg£189.72 GBP -
4-Chloro-7- (2-deoxy-β-D-erythro-pentofuranosyl) -5-iodo-7H-pyrrolo[2,3-d]pyrimidine [CAS 178995-71-6]
CAS: 178995-71-6 | SKU: QM-0070457 | Size: 1 Each Price on request -
4-Chloro-7H-pyrrolo[2,3-d]pyrimidine [CAS 3680-69-1]
CAS: 3680-69-1 | SKU: QM-0074259 | Size: 25 g£51.91 GBP -
4-Chlorophenoxyacetic acid (sodium) [CAS 13730-98-8]
CAS: 13730-98-8 | SKU: QM-0110699 | Size: 25 g£51.91 GBP -
4-Chlororesorcinol (Standard) [CAS 95-88-5]
CAS: 95-88-5 | SKU: QM-0108911-01 | Size: 25 mg£58.12 GBP -
4-Deoxy-4-fluoro-D-mannose [CAS 87764-47-4]
CAS: 87764-47-4 | SKU: QM-0106901-01 | Size: 5 mg£613.76 GBP -
4-Chloropyridine [CAS 626-61-9]
CAS: 626-61-9 | SKU: QM-0104997 | Size: 1 Each Price on request -
4-Chloromethamphetamine (hydrochloride) [CAS 30572-91-9]
CAS: 30572-91-9 | SKU: QM-0104089-01 | Size: 5 mg£337.95 GBP -
4-Desacetamido-4-fluoro Andarine-d4
SKU: QM-0099498 | Size: 1 Each Price on request -
4-Chlorobenzaldehyde-2,3,5,6-d4 [CAS 62285-59-0]
CAS: 62285-59-0 | SKU: QM-0097992-01 | Size: 10 mg£312.44 GBP -
4-Ethylphenyl sulfate (sodium)
SKU: QM-0096513 | Size: 1 Each Price on request -
4-Chlorophenoxyacetic acid (4-CPA) [CAS 122-88-3]
CAS: 122-88-3 | SKU: QM-0095296-01 | Size: 25 g£51.91 GBP -
4-Chloroquinolin-8-ol [CAS 57334-36-8]
CAS: 57334-36-8 | SKU: QM-0093490-01 | Size: 100 mg£130.75 GBP -
4-Chlorobenzyl cyanide-d4 [CAS 1219804-00-8]
CAS: 1219804-00-8 | SKU: QM-0090046 | Size: 1 mg Price on request -
4-Chlorobenzonitrile-d4 [CAS 1219794-82-7]
CAS: 1219794-82-7 | SKU: QM-0074285 | Size: 1 mg Price on request -
4-Chloro-3-methoxy-5-methylphenyl 6-O- (6-deoxy-β-L-mannopyranosyl) -β-D-glucopyranoside [CAS 2839363-15-2]
CAS: 2839363-15-2 | SKU: QM-0086983 | Size: 1 Each Price on request -
4-Chlororesorcinol [CAS 95-88-5]
CAS: 95-88-5 | SKU: QM-0086172 | Size: 500 g£88.00 GBP -
4-Chloro-N, N-diisopropylbenzamide [CAS 79606-45-4]
CAS: 79606-45-4 | SKU: QM-0084643 | Size: 1 g£51.91 GBP -
4-Fluoro-3-nitrobenzonitrile [CAS 1009-35-4]
CAS: 1009-35-4 | SKU: QM-0084230 | Size: 25 g£72.61 GBP -
4-Chloro-7- (2-deoxy-3,5-bis-O- (p-toluoyl) -β-D-ribofuranosyl) -7H-pyrrolo[2,3-d]pyrimidine [CAS 91713-43-8]
CAS: 91713-43-8 | SKU: QM-0070448-01 | Size: 25 mg£239.54 GBP -
4-Bromophenylacetonitrile [CAS 16532-79-9]
CAS: 16532-79-9 | SKU: QM-0055855-01 | Size: 5 g£51.91 GBP -
4-Chloro kynurenine-13C2,15N [CAS 1391051-72-1]
CAS: 1391051-72-1 | SKU: QM-0054572-01 | Size: 1 mg£686.66 GBP -
4-Chloro resorcinol-13C6 [CAS 953390-32-4]
CAS: 953390-32-4 | SKU: QM-0054497-01 | Size: 1 mg£471.61 GBP -
4-Bromophenoxytriisopropylsilane-13C6
SKU: QM-0054013 | Size: 1 Each Price on request -
4-Bromo-2,6-dimethylphenol-d8 [CAS 1142096-13-6]
CAS: 1142096-13-6 | SKU: QM-0053679-01 | Size: 10 mg£288.14 GBP -
4-Bromo-2,3,7,8-tetrachlorodibenzofuran-13C12
SKU: QM-0053224 | Size: 1 Each Price on request -
4-Bromoaniline-d4 [CAS 61357-76-4]
CAS: 61357-76-4 | SKU: QM-0053025-01 | Size: 100 mg£72.61 GBP -
4-Bromo-3,5-dimethoxybenzyl alcohol-d6 [CAS 2733270-98-7]
CAS: 2733270-98-7 | SKU: QM-0052965 | Size: 1 Each Price on request -
4-Chloro bupropion-d9 (fumarate) [CAS 1346606-37-8]
CAS: 1346606-37-8 | SKU: QM-0052906-01 | Size: 2.5 mg£567.59 GBP -
4-Amino-5-chloro-2-ethoxybenzoic acid-d5 [CAS 1346600-23-4]
CAS: 1346600-23-4 | SKU: QM-0052889-01 | Size: 10 mg£537.21 GBP -
4-Bromoiodobenzene-d4 [CAS 1147565-46-5]
CAS: 1147565-46-5 | SKU: QM-0052548-01 | Size: 100 mg£125.13 GBP -
4-Bromo-1,1-dimethoxybutane [CAS 24157-02-6]
CAS: 24157-02-6 | SKU: QM-0051700 | Size: 1 Each Price on request -
4-Bromoamphetamine (hydrochloride) [CAS 58400-88-7]
CAS: 58400-88-7 | SKU: QM-0051649-01 | Size: 5 mg£231.03 GBP -
4-Amino-cyclohexanecarboxylic acid methyl ester hydrochloride [CAS 100707-54-8]
CAS: 100707-54-8 | SKU: QM-0051530-01 | Size: 100 mg£51.91 GBP -
4-Bromobutyl acetate [CAS 4753-59-7]
CAS: 4753-59-7 | SKU: QM-0050931 | Size: 1 Each Price on request -
4-Bromo-N-methylbutan-1-amine hydrobromide [CAS 365432-20-8]
CAS: 365432-20-8 | SKU: QM-0050482 | Size: 1 Each Price on request -
4-Chloro-1- (2-methylpropyl) -1H-imidazo[4,5-c]quinoline (Standard) [CAS 99010-64-7]
CAS: 99010-64-7 | SKU: QM-0050002 | Size: 1 Each Price on request -
4-Chloro-1-butyne [CAS 51908-64-6]
CAS: 51908-64-6 | SKU: QM-0049741 | Size: 1 Each Price on request -
4-Bromobutoxy-tert-butyl-dimethylsilane [CAS 89043-32-3]
CAS: 89043-32-3 | SKU: QM-0049718 | Size: 1 Each Price on request -
4-Bromo-1-trimethylsilyl-1-butyne [CAS 69361-41-7]
CAS: 69361-41-7 | SKU: QM-0049713-01 | Size: 500 mg£51.91 GBP -
4-Amino-5-chloro-2-methoxybenzoic acid (Standard) [CAS 7206-70-4]
CAS: 7206-70-4 | SKU: QM-0049633 | Size: 1 Each Price on request -
4-Chloro-2,5-difluorophenylboronic acid pinacol ester [CAS 1126320-24-8]
CAS: 1126320-24-8 | SKU: QM-0049207-01 | Size: 100 mg£89.13 GBP -
4-Bromo-N-methylaniline-d3 [CAS 1185310-26-2]
CAS: 1185310-26-2 | SKU: QM-0049179 | Size: 1 Each Price on request -
4-Chloro-2- (trifluoroacetyl) aniline [CAS 154598-53-5]
CAS: 154598-53-5 | SKU: QM-0048846-01 | Size: 100 mg£52.44 GBP -
4-Bromo-6-fluoro-1H-indazole [CAS 885520-35-4]
CAS: 885520-35-4 | SKU: QM-0048838-01 | Size: 250 mg£51.91 GBP -
4-Bromo-2-fluoro-1,1'-biphenyl (Standard) [CAS 41604-19-7]
CAS: 41604-19-7 | SKU: QM-0048183 | Size: 1 Each Price on request -
4-Bromo-2,2-diphenylbutyronitrile (Standard) [CAS 39186-58-8]
CAS: 39186-58-8 | SKU: QM-0048120 | Size: 1 Each Price on request -
4-Chloro-1-naphthol (Standard) [CAS 604-44-4]
CAS: 604-44-4 | SKU: QM-0047792 | Size: 1 Each Price on request -
4-Bromo-2-fluoroaniline (Standard) [CAS 367-24-8]
CAS: 367-24-8 | SKU: QM-0047761 | Size: 1 Each Price on request -
4-Bromo-2-chlorophenol-13C6
SKU: QM-0047760 | Size: 1 Each Price on request -
4-Bromobutan-1-amine hydrobromide [CAS 24566-81-2]
CAS: 24566-81-2 | SKU: QM-0047676-01 | Size: 1 g£51.91 GBP -
4-Bromo-2-fluoro-6-nitrotoluene [CAS 502496-34-6]
CAS: 502496-34-6 | SKU: QM-0047649-01 | Size: 1 g£63.29 GBP -
4-Bromobutyronitrile [CAS 5332-06-9]
CAS: 5332-06-9 | SKU: QM-0047580-01 | Size: 5 g£51.91 GBP