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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Fluorene, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Fluorene 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 Fluorene-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.

Fluorene Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Aminofluorene-9-13C Stable Isotopes CS-C-00342 335081-08-8 Enquire
2-Hydroxy Fluorene-d9 Stable Isotopes CS-T-27406 922510-18-7 Enquire
3,6-Dimethyl-fluorene-d5 Stable Isotopes CS-T-98195 Not Available Enquire
9-Hydroxyfluorene-d9 Stable Isotopes CS-T-102928 1689-64-1(Unlabelled) Enquire
Fluorene 13C6 Stable Isotopes CS-T-54755 1189497-69-5 Enquire
Fluorene-d10 Stable Isotopes CS-T-23774 81103-79-9 In Stock


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2,7-Dibromofluorene API Standards CS-M-01991 16433-88-8 Enquire
2-bromo-7-iodo-9H-fluorene API Standards CS-DV-01571 123348-27-6 Enquire


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2,7-Dichloro-9-[(4-chlorophenyl)methylene]-β-(dibutylamino)-... Metabolites CS-TB-19482 1331642-68-2 Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"9,9-Dimethyl-9H-fluorene-2-carbonitrile" Impurities CS-T-53456 890134-27-7 Enquire
1-Methylfluorene Impurities CS-T-33860 1730-37-6 Enquire
2,2,7,7-Tetrakis-(N,N-di-4-methoxyphenylamino)-9,9-spirobifl... Impurities CS-T-61917 207739-72-8 Enquire
2-Methylfluorene Impurities CS-T-33861 1430-97-3 Enquire
4-Methylfluorene Impurities CS-T-33865 1556-99-6 Enquire
9-(Acetoxymethyl)fluorene Impurities CS-T-64410 63839-86-1 Enquire
9,9-Bis(3,5-dibromo-4-hydroxyphenyl)fluorene Impurities CS-DJ-00442 94854-03-2 Enquire
9-Ethylfluorene Impurities CS-T-22801 2294-82-8 Enquire
9-Methylidenefluorene Impurities CS-P-07967 4425-82-5 In Stock
9-Propylfluorene Impurities CS-T-40781 4037-45-0 Enquire
Fluorene-9-carboxamide Impurities CS-T-75668 7471-95-6 Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"(9,9-Dimethyl-9h-fluorene-2,7-diboronic acid" Intermediates CS-AC-06220 866100-14-3 Enquire
"(E,Z)-9-(4-Chlorophenyl)methylene-5-oxiranyl-2,7-dichlorofl... Intermediates CS-T-12430 252990-29-7 Enquire
"1,3,2-Dioxaborolane, 2,2'-(9,9-dimethyl-9h-fluorene-2,7-diy... Intermediates CS-AC-06444 325129-69-9 Enquire
"1-Chloro-9H-2,4,9-triaza-fluorene" Intermediates CS-M-05200 98792-02-0 Enquire
"2,5-Dichlorofluorene" Intermediates CS-T-88401 934748-28-4 Enquire
"2,7-Diaminofluorene Dihydrochloride" Intermediates CS-T-88645 13548-69-1 Enquire
"2,7-Dibromo-2’,3’,5’,6’-tetrahydrospiro[fluorene-9,4’-pyran... Intermediates CS-T-88719 934269-17-7 Enquire
"2,7-Dibromo-9,9-bis(2-ethylhexyl)-9H-fluorene" Intermediates CS-DV-01380 188200-93-3 Enquire
"2,7-Dibromo-9,9-dimethylfluorene" Intermediates CS-T-88464 28320-32-3 Enquire
"2,7-Dibromo-9,9-diphenyl-9H-fluorene" Intermediates CS-DV-01381 186259-63-2 Enquire
"2,7-Dibromo-9,9'-spirobifluorene" Intermediates CS-EL-03674 171408-84-7 Enquire
"2’,7’-Dibromo-2-vinylspiro[cyclopropane-1,9’-fluorene]" Intermediates CS-T-92033 951884-03-0 Enquire
"2’,7’-Dibromospiro[cyclopent[3]ene-1,9’-fluorene]" Intermediates CS-T-88275 951884-04-1 Enquire
"2-Bromo-9,9-dibutylfluorene" Intermediates CS-DJ-00929 88223-35-2 Enquire
"2-Bromo-9,9-dimethylfluorene" Intermediates CS-DV-01572 28320-31-2 Enquire
"2-Bromo-9,9'-spirobifluorene" Intermediates CS-EL-05084 171408-76-7 Enquire
"3,6-Dimethyl-fluorene" Intermediates CS-T-18599 7495-37-6 Enquire
"4-Oxo-4H-9-thia-1,4a-diaza-fluorene-3-carboxylic acid" Intermediates CS-M-21954 21786-97-0 Enquire
"7-bromo-9,9-dimethyl-9H-fluorene-2-carbaldehyde" Intermediates CS-DV-03346 944940-90-3 Enquire
"9,9-Bifluorene" Intermediates CS-CD-00092 1530-12-7 Enquire
"9,9-Bis(4-hydroxyphenyl)fluorene" Intermediates CS-M-35602 3236-71-3 Enquire
"9,9-Bis[4-(1-pyrenyl)phenyl]fluorene" Intermediates CS-DE-00117 1174006-47-3 Enquire
"9,9-Di(2,5,8,11-tetraoxatridecan-13-yl)-9H-fluorene-2,7-diy... Intermediates CS-AC-05135 771563-20-3 Enquire
"9,9-Didodecylfluorene-2,7-diboronic acid" Intermediates CS-T-91383 480424-86-0 Enquire
"9,9-Dihexyl-2,7-dibromofluorene" Intermediates CS-AC-07177 189367-54-2 Enquire
"9,9-Dimethyl-9H-fluorene-2,7-diol" Intermediates CS-EL-08805 221010-68-0 Enquire
"9,9-Di-n-octylfluorene-2,7-diboronic acid bis(pinacol) este... Intermediates CS-AC-05508 196207-58-6 Enquire
"9,9-Dioctyl-2,7-dibromofluorene" Intermediates CS-AC-07711 198964-46-4 Enquire
"9,9-Dioctylfluorene-2,7-bis(trimethylborate)" Intermediates CS-AC-05849 317802-08-7 Enquire
"9,9-Dioctylfluorene-2,7-diboronic acid" Intermediates CS-AC-06232 258865-48-4 Enquire
(2S)-2-[(9H-Fluorene-9-ylmethoxycarbonyl)amino]-3-[5-(dimeth... Intermediates CS-ED-05367 607708-62-3 Enquire
(R)-1-(9H-Fluorene-9-yl)ethanol Intermediates CS-ED-30098 107474-78-2 Enquire
[5a-S,10b-R]-2-(2,4,6-Trimethyl-phenyl)-2,5a,6,10b-tetrahydr... Intermediates CS-ED-34058 919102-70-8 Enquire
1,7-Dimethylfluorene Intermediates CS-T-19839 442-66-0 Enquire
2,2,7,7-Tetrabromo-9,9-spirobifluorene Intermediates CS-T-43494 128055-74-3 Enquire
2,2′-(9,9-Dibutyl-9H-fluorene-2,7-diyl)bis[4,4,5,5-tetrameth... Intermediates CS-O-49698 355135-06-7 Enquire
2,2'-Dibromo-9,9'-spirobi[fluorene] Intermediates CS-O-43969 67665-47-8 Enquire
2,7-Dichlorofluorene Intermediates CS-T-17552 7012-16-0 In Stock
2,7-Dinitrofluorene Intermediates CS-DK-00213 5405-53-8 Enquire
2,8-Dibromo-6,6,12,12-tetraoctyl-6,12-dihydroindeno[1,2-b]fl... Intermediates CS-O-49284 264281-45-0 Enquire
2-Acetamidofluorene Intermediates CS-T-64166 53-96-3 Enquire
2-Acetylfluorene Intermediates CS-ED-37403 781-73-7 Enquire
2-Amino-7-bromofluorene Intermediates CS-ED-02667 6638-60-4 Enquire
2-Amino-7-nitrofluorene Intermediates CS-T-03127 1214-32-0 Enquire
2-Bromo-9,9-diphenyl-9H-fluorene Intermediates CS-DV-01573 474918-32-6 Enquire
2-Chloro-9H-fluorene Intermediates CS-T-71573 2523-44-6 Enquire
2-Fluorofluorene Intermediates CS-AZ-00017 343-43-1 Enquire
3,6-Di-tert-butyl-9H-fluorene Intermediates CS-BL-00013 58775-07-8 Enquire
3-Bromo-9,9-dimethylfluorene Intermediates CS-O-43947 1190360-23-6 Enquire
3-Hydroxy-N-acetyl-2-aminofluorene Intermediates CS-T-79171 1838-56-8 Enquire
3-Nitrofluorene Intermediates CS-T-59418 5397-37-5 Enquire
4-Bromo-9,9-dimethyl-9H-fluorene Intermediates CS-ED-22728 942615-32-9 Enquire
5,9-dibromo-7,7-dimethyl-7H-Benzo[c]fluorene Intermediates CS-ED-26266 1056884-35-5 Enquire
7-Bromo-9,9,9',9'-tetraethyl-2,2'-bifluorene Intermediates CS-ED-13707 862847-75-4 Enquire
7-bromo-9,9-dimethyl-9H-Fluorene-2-carbonitrile Intermediates CS-DV-03347 656238-36-7 Enquire
7H-Benzo[c]fluorene Intermediates CS-T-48677 205-12-9 Enquire
7-Hydroxy-2-acetylaminofluorene Intermediates CS-T-55741 363-49-5 Enquire
9-(2-bromoethyl)-9H-fluorene Intermediates CS-ED-14993 108012-21-1 Enquire
9-(4-Bromophenyl)-9-phenylfluorene Intermediates CS-ED-21826 937082-81-0 Enquire
9,9-Bis(4-amino-3-chlorophenyl)fluorene Intermediates CS-ED-04674 107934-68-9 Enquire
9,9-Bis(4-amino-3-fluorophenyl)fluorene Intermediates CS-ED-08451 127926-65-2 Enquire
9,9-Bis(4-amino-3-methylphenyl)fluorene Intermediates CS-ED-21271 107934-60-1 Enquire
9,9-Bis(methoxymethyl) -9H-fluorene Intermediates CS-O-13027 182121-12-6 Enquire
9,9-Dimethyl-9H-fluorene Intermediates CS-DV-03414 4569-45-3 Enquire
9,9-Spirodifluorene-2-Boronic acid pinacol ester Intermediates CS-O-43931 884336-44-1 Enquire
9-[(2-Bromophenyl)methyl]-9H-fluorene Intermediates CS-T-69570 187754-47-8 Enquire
9-Bromo-9-phenylfluorene Intermediates CS-T-08770 55135-66-5 In Stock
9-Fluoreneacetic acid Intermediates CS-DK-00189 6284-80-6 Enquire
9-Fluorenemethanol Intermediates CS-M-57864 24324-17-2 Enquire
9H-fluorene Intermediates CS-O-31570 86-73-7 Enquire
9H-Fluorene, 3-bromo-9,9-diphenyl- Intermediates CS-DV-03427 1547491-70-2 Enquire
9H-Fluorene-4-carbonyl chloride Intermediates CS-M-45475 7315-93-7 Enquire
9H-Fluorene-4-carboxylic acid Intermediates CS-M-45474 6954-55-8 Enquire
9H-Fluorene-9-carboxylic Acid Intermediates CS-T-23775 1989-33-9 Enquire
9-Hydroxyfluorene Intermediates CS-T-27416 1689-64-1 In Stock
9-Methyl-9h-fluorene-9-carboxylic acid Intermediates CS-T-81508 3300-17-2 Enquire
9-Methylfluorene Intermediates CS-T-81969 2523-37-7 Enquire
9-Nitrofluorene Intermediates CS-T-83332 14544-96-8 Enquire
9-Oxo-9H-fluorene-4-carboxylic acid Intermediates CS-M-16726 6223-83-2 Enquire
N2,N7-Diphenyl-N2,N7-di-m-tolyl-9,9'-spirobi[fluorene]-2,7-d... Intermediates CS-ED-18091 1033035-83-4 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
10H-Spiro[acridine-9,9'-fluorene] Fine Chemicals CS-BL-00096 92638-81-8 Enquire
2,7-Diacetylfluorene Fine Chemicals CS-M-02918 961-27-3 Enquire
2,7-dibromospiro[9H-fluorene-9,9-[9H]xanthene] Fine Chemicals CS-O-38571 1346002-88-7 Enquire
2-Bromofluorene Fine Chemicals CS-T-08488 1133-80-8 Enquire
9-N-Butylfluorene Fine Chemicals CS-T-09949 3952-42-9 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3,7-Dibromospiro[5H-cyclopenta[2,1-b:3,4-b′]dipyridine-5,9′-... Building Blocks CS-O-49004 1635396-81-4 Enquire
4,5-Diaza-9,9′-spirobifluorene Building Blocks CS-O-49003 171856-25-0 Enquire