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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Furanone, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Furanone impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Furanone-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Furanone Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2,5-Dimethyl-4-hydroxy-3(2H)-furanone 13C2 Stable Isotopes CS-T-53492 138167-87-0 Enquire
4,6-Dihydroxy-2-[(3-hydroxy-4-methoxyphenyl)methylene]-3(2H)... Stable Isotopes CS-T-102706 2734189-91-2 Enquire
5-Ethyl-3-hydroxy-4-methyl-2(5H)-furanone-d3 Stable Isotopes CS-T-76946 156420-67-6 Enquire
Dihydro-​4-​(3-​pyridinylcarbonyl)​-2(3H)​-​furanone-d2 Stable Isotopes CS-T-100440 88696-94-0 Enquire
rac 5-(3-Pyridyl)tetrahydro-2-furanone-d3 Stable Isotopes CS-T-98839 Not Available Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"3-(3-Fluorophenyl)-5,5-dimethyl-4-[4-(methylsulfonyl)phenyl... Impurities CS-T-54900 178402-36-3 Enquire
"3,4-Dimethyl-2(5H)-furanone" Impurities CS-T-53676 1575-46-8 Enquire
"rac-cis-4-(2,4-Difluorophenyl)-3-methyl-2(5H)-furanone 3,4-... Impurities CS-T-18399 1329610-78-7 Enquire
(±)-Dihydro-4-[[3-methoxy-4-(phenylmethoxy)phenyl]methyl]-2(... Impurities CS-T-18935 92831-74-8 Enquire
(3S)-Dihydro-3-[(tetrahydro-2H-pyran-2-yl)oxy]-2(3H)-furanon... Impurities CS-T-18996 83680-34-6 Enquire
2(3H)-Benzofuranone Impurities CS-T-05130 553-86-6 Enquire
2,5-Dihydro-5-hydroxy-2-furanone Impurities CS-O-40179 14032-66-7 Enquire
4-Hydroxy-5-methyl-3-furanone Impurities CS-DV-02817 19322-27-1 Enquire
5-(2,3-Dichlorophenyl)dihydro-2(3H)-furanone Impurities CS-T-88803 1391052-21-3 Enquire
5-(7-Hydroxy-6-methyloctyl)-2(5H)-furanone Impurities CS-O-48358 1206874-24-9 Enquire
5-Hydroxy-4-methyl-2(5H)-furanone Impurities CS-O-10917 40834-42-2 In Stock
6-Chloro-3-benzofuranone Impurities CS-DL-00961 3260-78-4 Enquire
Dihydro-3-(3-pyridoyl)-2-(3H)-furanone Impurities CS-T-53087 59578-61-9 Enquire
Dihydro-3-[(3-methoxyphenyl)methyl]-2(3H)-furanone Impurities CS-T-53111 187993-26-6 Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"2,5-Dimethyl-4-hydroxy-3(2H)-furanone" Intermediates CS-T-20005 3658-77-3 Enquire
"2-Methoxy-2,4-diphenyl-3(2H)-furanone" Intermediates CS-T-82093 50632-57-0 Enquire
"3,4-dichloro-5-phenyl-2(5H)-furanone" Intermediates CS-EL-01961 72857-85-3 Enquire
"3-Hydroxy-5,5-dimethyl-4-[4-(methylsulfonyl)phenyl]-2(5H)-f... Intermediates CS-T-79147 189955-89-3 Enquire
"4,5-Dimethyl-3-hydroxy-2(5H)-furanone" Intermediates CS-T-20290 28664-35-9 Enquire
1(3H)-Isobenzofuranone, 3,3-bis(1-butyl-2-methyl-1H-indol-3-... Intermediates CS-ED-14954 50292-91-6 Enquire
1(3H)-Isobenzofuranone, 3-butylidene-4,5,6,7-tetrahydro-6,7-... Intermediates CS-ED-34157 94596-28-8 Enquire
2(3H)-Furanone, 5-[(1S,3S)-1-azido-3-[[4-methoxy-3-(3-methox... Intermediates CS-ED-12045 324763-46-4 Enquire
2(3H)-Furanone, 5-ethoxydihydro-3-phenyl- Intermediates CS-ED-28663 99558-18-6 Enquire
2(3H)-Furanone, dihydro-4-propyl- Intermediates CS-DV-01081 72397-60-5 Enquire
2(3H)-Furanone,5-[(3,4-dihydroxyphenyl)methyl]dihydro-,(5R)-... Intermediates CS-T-19304 191666-22-5 Enquire
2-Methyl tetrahydro-3-furanone Intermediates CS-M-57645 3188-00-9 Enquire
3-(Phenylthio)-2(5H)-furanone Intermediates CS-M-53368 42435-82-5 Enquire
3,4-Dibromo-5-phenyl-2(5H)-furanone Intermediates CS-M-31929 72857-86-4 Enquire
3-[(E)-1-(2-methoxyanilino)ethylidene]dihydro-2(3H)-furanone Intermediates CS-EL-29965 123438-75-5 Enquire
3-[3-chloro-5-(trifluoromethyl)-2-pyridinyl]-4-phenyl-2(5H)-... Intermediates CS-EL-05782 320420-57-3 Enquire
3-{(Z)-1-[2-(trifluoromethyl)anilino]ethylidene}dihydro-2-fu... Intermediates CS-EL-07817 685108-57-0 Enquire
3-Acetyl-3-chlorodihydrofuranone Intermediates CS-T-47171 2986-00-7 Enquire
3-Bromo-4-(dibromomethyl)-5-hydroxy-2(5H)-furanone Intermediates CS-T-49688 132059-53-1 Enquire
3-Chloro-4-(dibromomethyl)-5-hydroxy-2(5H)-furanone Intermediates CS-T-50657 132059-52-0 Enquire
3-Chloro-4-(dichloromethyl)-2(5H)-furanone Intermediates CS-T-72038 122551-89-7 Enquire
3-Chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone Intermediates CS-T-50658 77439-76-0 Enquire
4-(4-chlorophenyl)-3-[3-chloro-5-(trifluoromethyl)-2-pyridin... Intermediates CS-EL-01879 303997-73-1 Enquire
4-(Bromochloromethyl)-3-chloro-5-hydroxy-2(5H)-furanone Intermediates CS-T-08067 132059-51-9 Enquire
4-Benzoyldihydro-2(3H)-furanone Intermediates CS-M-34118 21034-22-0 Enquire
4-Chloro-5-hydroxy-3-(4-methoxyphenoxy)-2(5H)-furanone Intermediates CS-M-30444 42190-28-3 Enquire
4-Hydroxy-5-methyl-2-methylene-3(2H)-furanone Intermediates CS-T-27917 948557-12-8 Enquire
4-methoxy-5-{[4-(trifluoromethyl)anilino]methylene}-2(5H)-fu... Intermediates CS-EL-29902 1164564-73-1 Enquire
4-phenyldihydro-3(2H)-furanone Intermediates CS-ED-33321 946125-02-6 Enquire
5-(3-Chlorophenyl)dihydro-2(3H)-furanone Intermediates CS-T-50902 875256-56-7 Enquire
5-(anilinomethylene)-4-methyl-3-(4-nitrophenyl)-2(5H)-furano... Intermediates CS-EL-03162 338976-55-9 Enquire
5-(Azidomethyl)-3,3-difluorodihydro-2(3H)-furanone Intermediates CS-ED-05260 189136-13-8 Enquire
5-Ethyl-3-hydroxy-4-methyl-2(5H)-furanone Intermediates CS-T-76653 698-10-2 Enquire
5-Fluoro-1(3h)-isobenzofuranone Intermediates CS-T-75422 700-85-6 Enquire
5-Hydroxy-4-propyl-2(5H)-furanone Intermediates CS-ED-40827 78920-10-2 Enquire
5-Methylene-2(5H)-furanone Intermediates CS-T-58225 108-28-1 Enquire
6,7-Dihydro-4(5H)-benzofuranone Intermediates CS-DV-03193 16806-93-2 Enquire
7-Bromo-3-benzofuranone Intermediates CS-M-57981 519018-52-1 Enquire
Difluoroethyl-amino-furanone Intermediates CS-ED-02474 Not Available Enquire
Dihydro-4,4,5,5-tetramethyl-2[3H]-furanone Intermediates CS-ED-02420 16466-24-3 Enquire
Dihydro-5-(1-naphthalenyl)-2-furanone Intermediates CS-T-18908 180987-85-3 Enquire
Dihydro-5-methyl-3(2H)-furanone Intermediates CS-T-90398 34003-72-0 Enquire
rac 5-(3-Pyridyl)tetrahydro-2-furanone Intermediates CS-T-41179 20971-79-3 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(4R)-4-Butyldihydro-2(3H)-furanone Fine Chemicals CS-O-37845 124094-63-9 Enquire
2(5H)-Furanone Fine Chemicals CS-M-53382 497-23-4 In Stock
6-Fluoro-4-nitro-1(3H)-isobenzofuranone Fine Chemicals CS-T-93935 1207453-90-4 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3,3-DIFLUORODIHYDRO-2(3H)-FURANONE Building Blocks CS-O-46326 220294-13-3 Enquire
3-Hydroxy-5-methyl-2(5H)-furanone Building Blocks CS-O-43728 21053-73-6 Enquire