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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Methotrexate γ-Methyl Ester [CAS 67022-39-3]
CAS: 67022-39-3 | SKU: QM-0062608-01 | Size: 1 mg£357.39 GBP -
Methyl 2,3,4-Tri-O-acetyl-1-thio-β-L-fucopyranoside [CAS 84635-54-1]
CAS: 84635-54-1 | SKU: QM-0090905 | Size: 1 Each Price on request -
Magnesium sulfate, for cell culture [CAS 7487-88-9]
CAS: 7487-88-9 | SKU: QM-0089874 | Size: 50 mg£51.91 GBP -
Methyl 2- (5-acetyl-2,3-dihydrobenzofuran-2-yl) propenoate [CAS 617722-55-1]
CAS: 617722-55-1 | SKU: QM-0088795 | Size: 1 Each Price on request -
Methyl 2-bromo-3,3,3-trifluoropropionate [CAS 113816-36-7]
CAS: 113816-36-7 | SKU: QM-0087436-01 | Size: 100 mg£238.32 GBP -
Mead acid methyl ester [CAS 14602-39-2]
CAS: 14602-39-2 | SKU: QM-0084287-01 | Size: 1 mg£266.27 GBP -
Metaproterenol (hemisulfate) (Standard) [CAS 5874-97-5]
CAS: 5874-97-5 | SKU: QM-0078344-01 | Size: 5 mg£72.61 GBP -
Lenalidomide-4-Br-7-fluoro [CAS 2438239-34-8]
CAS: 2438239-34-8 | SKU: QM-0052030-01 | Size: 25 mg£88.00 GBP -
L-Arginine ethyl ester (dihydrochloride) (Standard) [CAS 36589-29-4]
CAS: 36589-29-4 | SKU: QM-0048148 | Size: 1 Each Price on request -
Luteolin-7-O-β-D-glucuronide methyl ester [CAS 76939-42-9]
CAS: 76939-42-9 | SKU: QM-0023436 | Size: 1 Each Price on request -
L-Canavanine (sulfate) (Standard) [CAS 2219-31-0]
CAS: 2219-31-0 | SKU: QM-0018358-01 | Size: 5 mg£67.44 GBP -
Ketorolac-13C6
SKU: QM-0018122 | Size: 1 Each Price on request -
Ketotifen-d3 [CAS 126939-17-1]
CAS: 126939-17-1 | SKU: QM-0017984 | Size: 1 Each Price on request -
L-Cysteine S-sulfate (sodium hydrate) (Standard) [CAS 150465-29-5]
CAS: 150465-29-5 | SKU: QM-0017358-01 | Size: 10 mg£60.19 GBP -
Leupeptin (hemisulfate) (Standard) [CAS 103476-89-7]
CAS: 103476-89-7 | SKU: QM-0016434-01 | Size: 5 mg£238.32 GBP -
L-Anap methyl ester (hydrochloride)
SKU: QM-0011710 | Size: 1 Each Price on request -
KF-52 enantiomer [CAS 3104612-73-6]
CAS: 3104612-73-6 | SKU: QM-0009284-01 | Size: 5 mg£853.12 GBP -
Ketopynalin [CAS 300843-20-3]
CAS: 300843-20-3 | SKU: QM-0009044 | Size: 1 Each Price on request -
L-Ascorbate sulfate (disodium) [CAS 53910-28-4]
CAS: 53910-28-4 | SKU: QM-0007285 | Size: 1 Each Price on request -
Larotrectinib sulfate (Standard) [CAS 1223405-08-0]
CAS: 1223405-08-0 | SKU: QM-0005468-01 | Size: 5 mg£256.55 GBP -
Laudexium (methylsulfate) [CAS 3253-60-9]
CAS: 3253-60-9 | SKU: QM-0004842 | Size: 1 Each Price on request -
Lipoxamycin (hemisulfate) (Standard) [CAS 11075-87-9]
CAS: 11075-87-9 | SKU: QM-0004535-01 | Size: 1 mg£250.47 GBP -
Leupeptin (hemisulfate) [CAS 103476-89-7]
CAS: 103476-89-7 | SKU: QM-0154903-01 | Size: 5 mg£94.75 GBP -
L-Leucyl-L-Leucine methyl ester (hydrobromide) [CAS 16689-14-8]
CAS: 16689-14-8 | SKU: QM-0142981-01 | Size: 5 mg£78.82 GBP -
Lipoxamycin (hemisulfate) [CAS 11075-87-9]
CAS: 11075-87-9 | SKU: QM-0139704-01 | Size: 5 mg£232.25 GBP -
Luteolin 7-O-glucuronide [CAS 29741-10-4]
CAS: 29741-10-4 | SKU: QM-0164340-01 | Size: 1 mg£75.72 GBP -
L-Alanine, N-[ (S) - (4-nitrophenoxy) phenoxyphosphinyl]-, 1-methylethyl ester [CAS 1256490-31-9]
CAS: 1256490-31-9 | SKU: QM-0157021-01 | Size: 5 mg£426.65 GBP -
Larotrectinib sulfate [CAS 1223405-08-0]
CAS: 1223405-08-0 | SKU: QM-0142480-01 | Size: 5 mg£101.50 GBP -
Ketotifen-d3 (fumarate) [CAS 1795138-23-6]
CAS: 1795138-23-6 | SKU: QM-0157602-01 | Size: 1 mg£146.50 GBP -
Lobeglitazone (sulfate) [CAS 763108-62-9]
CAS: 763108-62-9 | SKU: QM-0150010-01 | Size: 5 mg£301.50 GBP -
Lenalidomide-acetylene-C5-COOH [CAS 2429878-72-6]
CAS: 2429878-72-6 | SKU: QM-0142910-01 | Size: 25 mg£514.13 GBP -
Ketorolac (tromethamine salt) [CAS 74103-07-4]
CAS: 74103-07-4 | SKU: QM-0157552-01 | Size: 500 mg£89.13 GBP -
Ketotifen [CAS 34580-13-7]
CAS: 34580-13-7 | SKU: QM-0157600-01 | Size: 25 mg£62.26 GBP -
LIN28 inhibitor LI71 enantiomer [CAS 956189-58-5]
CAS: 956189-58-5 | SKU: QM-0140999-01 | Size: 5 mg£577.31 GBP -
L-Leucyl-L-Leucine methyl ester (hydrochloride) [CAS 6491-83-4]
CAS: 6491-83-4 | SKU: QM-0142980-01 | Size: 100 mg£78.82 GBP -
L-Canavanine (sulfate) [CAS 2219-31-0]
CAS: 2219-31-0 | SKU: QM-0159926-01 | Size: 50 mg£67.44 GBP -
L-Hyoscyamine (sulfate) [CAS 620-61-1]
CAS: 620-61-1 | SKU: QM-0162720-01 | Size: 5 mg£52.44 GBP -
L-Cysteine S-sulfate (sodium hydrate) [CAS 150465-29-5]
CAS: 150465-29-5 | SKU: QM-0156293-01 | Size: 100 mg£78.82 GBP -
Ketorolac [CAS 74103-06-3]
CAS: 74103-06-3 | SKU: QM-0158641-01 | Size: 50 mg£78.82 GBP -
Luteolin 7,3′-di-O-glucuronide [CAS 53965-08-5]
CAS: 53965-08-5 | SKU: QM-0199030-01 | Size: 1 mg£803.30 GBP -
Lobeline (sulfate) [CAS 134-64-5]
CAS: 134-64-5 | SKU: QM-0075941-01 | Size: 10 mg Price on request -
L-Phenylalanine, N-[N-[ (1,1-dimethylethoxy) carbonyl]-D-leucyl]-, phenylmethyl ester [CAS 140834-91-9]
CAS: 140834-91-9 | SKU: QM-0157064-01 | Size: 50 mg£106.00 GBP -
Luteolin-3-O-beta-D-glucuronide [CAS 53527-42-7]
CAS: 53527-42-7 | SKU: QM-0165552-01 | Size: 5 mg£288.14 GBP -
L-Cysteine methyl ester (hydrochloride) [CAS 18598-63-5]
CAS: 18598-63-5 | SKU: QM-0159274-01 | Size: 1 g£51.91 GBP -
L-Norvaline ethyl ester HCl [CAS 40918-51-2]
CAS: 40918-51-2 | SKU: QM-0077437-01 | Size: 10 g£94.75 GBP -
L-Cysteine ethyl ester HCl [CAS 868-59-7]
CAS: 868-59-7 | SKU: QM-0194416-01 | Size: 100 g£89.13 GBP -
Levacetylleucine [CAS 1188-21-2]
CAS: 1188-21-2 | SKU: QM-0156565-01 | Size: 500 mg£78.82 GBP -
L-Lysine ethyl ester dihydrochloride [CAS 3844-53-9]
CAS: 3844-53-9 | SKU: QM-0194188-01 | Size: 25 g£53.98 GBP -
Linoleic Acid-d11 methyl ester
SKU: QM-0164363-01 | Size: 5 mg Price on request -
L-Pyroglutamic acid ethyl ester [CAS 7149-65-7]
CAS: 7149-65-7 | SKU: QM-0156092-01 | Size: 25 g£51.91 GBP -
LL-37, acetylated, amidated
SKU: QM-0189009-01 | Size: 5 mg£464.31 GBP -
L-Alanine methyl ester hydrochloride [CAS 2491-20-5]
CAS: 2491-20-5 | SKU: QM-0161601-01 | Size: 100 g£51.91 GBP -
L-Serine methyl ester (hydrochloride) [CAS 5680-80-8]
CAS: 5680-80-8 | SKU: QM-0155898-01 | Size: 100 g£51.91 GBP -
Luteolin 7-diglucuronide [CAS 96400-45-2]
CAS: 96400-45-2 | SKU: QM-0185118-01 | Size: 5 mg£339.17 GBP -
Luteolin 7-sulfate [CAS 56857-57-9]
CAS: 56857-57-9 | SKU: QM-0183450-01 | Size: 1 mg£528.71 GBP -
Ketorolac-d4 [CAS 1216451-53-4]
CAS: 1216451-53-4 | SKU: QM-0158645-01 | Size: 1 mg£684.23 GBP -
Lithocholic acid 3-sulfate-d4 (sodium salt)
SKU: QM-0137954-01 | Size: 1 mg Price on request -
Ketotifen (fumarate) [CAS 34580-14-8]
CAS: 34580-14-8 | SKU: QM-0157601-01 | Size: 100 mg£51.91 GBP -
L-Cefadroxil-d4 (trifluoroacetate)
SKU: QM-0159481-01 | Size: 5 mg Price on request -
Lithium dodecyl sulfate [CAS 2044-56-6]
CAS: 2044-56-6 | SKU: QM-0172705-01 | Size: 5 g£57.09 GBP -
Ketorolac-d5 [CAS 1215767-66-0]
CAS: 1215767-66-0 | SKU: QM-0158644-01 | Size: 1 mg£220.10 GBP -
Ladanetin-6-O-β- (6′′-O-acetyl) glucoside [CAS 1256959-27-9]
CAS: 1256959-27-9 | SKU: QM-0163584 | Size: 1 Each Price on request -
L-Phenylalanine 7-amido-4-methylcoumarin (trifluoroacetate) [CAS 108321-84-2]
CAS: 108321-84-2 | SKU: QM-0168762 | Size: 1 Each Price on request -
Leukotriene A4 methyl ester [CAS 73466-12-3]
CAS: 73466-12-3 | SKU: QM-0137599-01 | Size: 25 µg£464.31 GBP -
L-Kynurenine-13C10 (sulfate)
SKU: QM-0057429 | Size: 1 mg Price on request -
L-Cysteine S-sulfate [CAS 1637-71-4]
CAS: 1637-71-4 | SKU: QM-0058635 | Size: 1 Each Price on request -
L-tert-Leucine Methyl Ester Hydrochloride [CAS 63038-27-7]
CAS: 63038-27-7 | SKU: QM-0134372-01 | Size: 25 g£57.09 GBP -
Leukotriene A 3 methyl ester [CAS 83851-38-1]
CAS: 83851-38-1 | SKU: QM-0132921 | Size: 1 Each Price on request -
Ketotifen (fumarate) (Standard) [CAS 34580-14-8]
CAS: 34580-14-8 | SKU: QM-0131271-01 | Size: 10 mg£57.09 GBP -
Lenalidomide-7-bromohept-1-yne [CAS 2619511-78-1]
CAS: 2619511-78-1 | SKU: QM-0130766 | Size: 1 Each Price on request -
L-Kynurenine (sulfate) [CAS 16055-80-4]
CAS: 16055-80-4 | SKU: QM-0057428 | Size: 1 Each Price on request -
Levothyroxine acyl glucuronide [CAS 909880-81-5]
CAS: 909880-81-5 | SKU: QM-0062849 | Size: Inquire Price on request -
Lenalidomide-5-bromopentanamide [CAS 2545963-24-2]
CAS: 2545963-24-2 | SKU: QM-0128357 | Size: 1 Each Price on request -
L-Hyoscyamine (sulfate hydrate) [CAS 6835-16-1]
CAS: 6835-16-1 | SKU: QM-0127880 | Size: 1 Each Price on request -
Lithocholic acid 3-sulfate (disodium) [CAS 64936-81-8]
CAS: 64936-81-8 | SKU: QM-0058669-01 | Size: 1 mg£51.91 GBP -
Lipoxin B4 methyl ester [CAS 97589-07-6]
CAS: 97589-07-6 | SKU: QM-0122249 | Size: 1 Each Price on request -
Leukotriene C4 methyl ester [CAS 73958-10-8]
CAS: 73958-10-8 | SKU: QM-0060914-01 | Size: 50 µg£806.95 GBP -
Luteolin 7-O-glucuronide (Standard) [CAS 29741-10-4]
CAS: 29741-10-4 | SKU: QM-0121189 | Size: 1 Each Price on request -
L-Methionine methyl ester hydrochloride [CAS 2491-18-1]
CAS: 2491-18-1 | SKU: QM-0120034 | Size: 100 g£121.75 GBP -
Ketotifen-13C, d3 [CAS 2748522-40-7]
CAS: 2748522-40-7 | SKU: QM-0074739 | Size: 1 mg£1,493.42 GBP -
L-Methionine 7-amido-4-methylcoumarin (trifluoroacetate) [CAS 94367-35-8]
CAS: 94367-35-8 | SKU: QM-0118662-01 | Size: 10 mg£350.11 GBP -
Leucylleucine methyl ester [CAS 13022-42-9]
CAS: 13022-42-9 | SKU: QM-0118296 | Size: 1 Each Price on request -
Lithium sulfate [CAS 10377-48-7]
CAS: 10377-48-7 | SKU: QM-0115984-01 | Size: 50 g£51.91 GBP -
L-Kynurenine-13C10 (sulfate hydrate)
SKU: QM-0057433 | Size: 100 µg£489.83 GBP -
Lithocholic acid 3-sulfate-d4 (disodium)
SKU: QM-0058670 | Size: 1 mg£740.12 GBP -
L-Arginine α-ketoglutarate [CAS 16856-18-1]
CAS: 16856-18-1 | SKU: QM-0111469 | Size: 5 g£51.91 GBP -
Ketorolac (Standard) [CAS 74103-06-3]
CAS: 74103-06-3 | SKU: QM-0106543-01 | Size: 5 mg£57.09 GBP -
Leukotriene C4-d5 methyl ester
SKU: QM-0060915 | Size: 1 mg Price on request -
Lactose-3'-sulfate [CAS 159358-51-7]
CAS: 159358-51-7 | SKU: QM-0101653 | Size: 1 mg£692.74 GBP -
Leu-AMS R enantiomer [CAS 9007-83-4]
CAS: 9007-83-4 | SKU: QM-0000278 | Size: 1 mg£336.74 GBP -
Lipoxin A4 methyl ester [CAS 97643-35-1]
CAS: 97643-35-1 | SKU: QM-0100804-01 | Size: 25 µg£806.95 GBP -
L-Kynurenine-13C10 (sulfate hemihydrate)
SKU: QM-0057430 | Size: 100 µg£577.31 GBP -
Ketorolac (hemicalcium) [CAS 167105-81-9]
CAS: 167105-81-9 | SKU: QM-0075040-01 | Size: 25 mg£78.82 GBP -
Leukotriene E4 methyl ester [CAS 89461-65-4]
CAS: 89461-65-4 | SKU: QM-0098325 | Size: 1 Each Price on request -
Lumiracoxib acyl-β-D-glucuronide [CAS 697287-17-5]
CAS: 697287-17-5 | SKU: QM-0098056-01 | Size: 1 mg£574.88 GBP -
L-Chlorozotocin [CAS 69839-80-1]
CAS: 69839-80-1 | SKU: QM-0096803 | Size: 1 Each Price on request -
Lauryl Sulfate Tryptose Broth
SKU: QM-0072877-01 | Size: 50 g£51.91 GBP -
Ketorolac (hydrochloride) [CAS 218934-99-7]
CAS: 218934-99-7 | SKU: QM-0091557 | Size: 1 Each Price on request -
L-Cysteine S-sulfate (sodium) [CAS 7381-67-1]
CAS: 7381-67-1 | SKU: QM-0056951 | Size: 1 Each Price on request -
Ketotrexate (sodium) [CAS 52386-42-2]
CAS: 52386-42-2 | SKU: QM-0057556 | Size: 1 Each Price on request -
Ketorolac (tromethamine salt) (Standard) [CAS 74103-07-4]
CAS: 74103-07-4 | SKU: QM-0089649-01 | Size: 25 mg£57.09 GBP -
Luteolin 7-diglucuronide (Standard) [CAS 96400-45-2]
CAS: 96400-45-2 | SKU: QM-0089264 | Size: 1 Each Price on request -
Luteolin-3-O-beta-D-glucuronide (Standard) [CAS 53527-42-7]
CAS: 53527-42-7 | SKU: QM-0088761 | Size: 1 Each Price on request -
L-Hyoscyamine (sulfate) (Standard) [CAS 620-61-1]
CAS: 620-61-1 | SKU: QM-0084625 | Size: 1 Each Price on request -
Lenalidomide-acetylene-C3-MsO [CAS 2138441-31-1]
CAS: 2138441-31-1 | SKU: QM-0084501 | Size: 1 Each Price on request -
Ketotifen (Standard) [CAS 34580-13-7]
CAS: 34580-13-7 | SKU: QM-0084102 | Size: 1 Each Price on request -
Lenalidomide-acetylene-Br [CAS 2619512-84-2]
CAS: 2619512-84-2 | SKU: QM-0072539 | Size: 1 Each Price on request -
Idarubicinol-d4 (Mixture of Diastereomers)
SKU: QM-0054359 | Size: 1 Each Price on request -
Irbesartan 2,2,2-Trifluoroacetate Salt-d7
SKU: QM-0053799 | Size: 1 Each Price on request -
Juvenile hormone B 3 (mixture of diastereomers) [CAS 120293-93-8]
CAS: 120293-93-8 | SKU: QM-0052284 | Size: 500 µg£577.31 GBP -
Kaempferol 3-O-β-D-glucuronide (Standard) [CAS 22688-78-4]
CAS: 22688-78-4 | SKU: QM-0024450 | Size: 1 Each Price on request -
Ketoprofen-CoA [CAS 1014699-64-9]
CAS: 1014699-64-9 | SKU: QM-0019688 | Size: 1 Each Price on request -
Ketoprofen-13C6 [CAS 1261392-46-4]
CAS: 1261392-46-4 | SKU: QM-0018015 | Size: 1 Each Price on request -
Ivabradine (sulfate) [CAS 1202000-62-1]
CAS: 1202000-62-1 | SKU: QM-0017986 | Size: 1 Each Price on request -
Isopropyl ((R) - (perfluorophenoxy) (phenoxy) phosphoryl) -D-alaninate (Standard) [CAS 1627824-09-2]
CAS: 1627824-09-2 | SKU: QM-0017478-01 | Size: 10 mg£69.50 GBP -
Isopropyl ((R) - (perfluorophenoxy) (phenoxy) phosphoryl) -D-alaninate [CAS 1627824-09-2]
CAS: 1627824-09-2 | SKU: QM-0017477-01 | Size: 100 mg£124.00 GBP -
Isoegomaketone [CAS 34348-59-9]
CAS: 34348-59-9 | SKU: QM-0017369-01 | Size: 5 mg£348.89 GBP -
Jacaric acid methyl ester
SKU: QM-0013655 | Size: 1 Each Price on request -
Keratin sulfate [CAS 169799-44-4]
CAS: 169799-44-4 | SKU: QM-0010622-01 | Size: 50 mg£59.16 GBP -
Keto lovastatin [CAS 96497-73-3]
CAS: 96497-73-3 | SKU: QM-0009034 | Size: 1 Each Price on request