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

Cyclopentane Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1R,3S)-3-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl]cyclop... Stable Isotopes CS-T-100983 Not Available Enquire
(1S,2S,3R,5S)-3-(5-Amino-6-chloro-2-(propylthio)pyrimidin-4-... Stable Isotopes CS-T-100892 Not Available Enquire
(1S,2S,3R,5S)-3-[[3-[(1R,2S)-2-(3,4-Difluorophenyl)cycloprop... Stable Isotopes CS-T-100455 Not Available Enquire
(1S,2S,3R,5S)-3-[7-[[(1R,2S)-2-(2,3-difluorophenyl)cycloprop... Stable Isotopes CS-T-100450 Not Available Enquire
(1S,2S,3R,5S)-3-[7-[[(1R,2S)-2-(4-fluorophenyl)cyclopropyl]a... Stable Isotopes CS-T-100296 Not Available Enquire
1-[(4-Chlorophenyl)methyl]-3,3-dimethyl-2-oxocyclopentanecar... Stable Isotopes CS-T-102846 115851-50-8(Unlabelled) Enquire
1-[(4-Chlorophenyl)methyl]-3-methyl-2-oxocyclopentanecarboxy... Stable Isotopes CS-T-102848 Not Available Enquire
1-trans-2-cis-4-Trimethylcyclopentane-d3 Stable Isotopes CS-T-102003 Not Available Enquire
Beta-Oxocyclopentanepropanenitrile-d8 Stable Isotopes CS-O-60174 2469103-33-9 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
iodocyclopentane API CS-EM-02750 1556-18-9 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1R,3S)-3-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl]cyclop... Impurity CS-T-65819 208762-35-0 In Stock
(1S,2S,3R,5S)-3-(5-Amino-6-chloro-2-(propylthio)pyrimidin-4-... Impurity CS-T-65978 1402150-32-6 In Stock
(1S,2S,3R,5S)-3-amino-5-(2-hydroxyethoxy)cyclopentane-1,2-di... Impurity CS-O-53563 1444301-60-3 Enquire
(+/-)-cis-2-Amino-1-cyclopentanecarboxylic acid hydrochlorid... Impurity CS-EL-01396 18414-30-7 Enquire
(+/-)-cis-2-Amino-2-methylcyclopentane-1-carboxylic acid hyd... Impurity CS-EL-04456 156292-34-1 Enquire
(±)-1’-(2-Aminoethyl)-3’,4’-dihydro-7’-methoxy-spiro[cyclope... Impurity CS-T-65818 51491-10-2 Enquire
(±)-3’,4’-Dihydro-1’-hydroxy-7’-methoxy-spiro[cyclopentane-1... Impurity CS-T-90631 51491-09-9 Enquire
(1R,2R)-Boc-aminocyclopentane carboxylic Acid Impurity CS-T-67998 245115-25-7 Enquire
(1R,2S,3R,4S)-3-((S)-1-acetamido-2-ethylbutyl)-4-guanidino-2... Impurity CS-O-36332 Not Available Enquire
(1R,2S,3R,5R)-3-Amino-5-(hydroxymethyl)cyclopentane-1,2-diol... Impurity CS-DV-00048 79200-57-0 Enquire
(1R,3S)-3-aminocyclopentane-1-carboxylic acid HCl Impurity CS-AC-04693 147780-44-7 Enquire
(1R,3S)-Boc-3-aminocyclopentane-1-carboxylic acid Impurity CS-DV-00053 161660-94-2 Enquire
(1R,3S)-N-Boc-1-Aminocyclopentane-3-carboxylic acid Impurity CS-DV-00054 261165-05-3 Enquire
(1S,3R)-3-aminocyclopentane-1-carboxylic acid HCl Impurity CS-AC-04413 1096155-68-8 Enquire
(1S,3R,4R)-Methyl 3-((tert-butoxycarbonyl)amino)-4-hydroxycy... Impurity CS-T-33323 321744-16-5 Enquire
(1S,3S)-3-((tert-Butoxycarbonyl)amino)cyclopentanecarboxylic... Impurity CS-DV-00066 161601-29-2 Enquire
(1S,3S)-3-aminocyclopentane-1-carboxylic acid Impurity CS-DV-00067 71376-02-8 Enquire
(2-Chloroethyl)cyclopentane Impurity CS-DJ-01178 84226-36-8 Enquire
(Bromomethyl)cyclopentane Impurity CS-DL-00702 3814-30-0 Enquire
[4-(Cyclopentanecarbonyl-amino)-pyrazol-1-yl]-acetic acid Impurity CS-M-29318 1183764-58-0 Enquire
1-(3,4-Dimethyl-benzenesulfonyl)-cyclopentane-carboxylic aci... Impurity CS-M-04210 505071-94-3 Enquire
1-(4-Hydroxy-phenyl)-cyclopentanecarboxylic acid Impurity CS-M-09208 91496-64-9 Enquire
1-(Methoxymethyl)cyclopentanecarboxamide Impurity CS-M-29204 1142211-23-1 Enquire
1-(N-Methyl-p-toluenesulfonamido)-cyclopentanecarboxylic aci... Impurity CS-O-43760 92697-49-9 Enquire
1,1-Dimethylcyclopentane Impurity CS-T-53441 1638-26-2 Enquire
1-Methylcyclopentanecarboxylic acid Impurity CS-M-47224 5217-05-0 Enquire
1-trans-2-cis-4-Trimethylcyclopentane Impurity CS-T-87440 16883-48-0 Enquire
2-[(Dimethylamino)methylene]cyclopentane-1,3-dione Impurity CS-M-47478 85302-06-3 Enquire
2-[[(6-Chloro-3-pyridinyl)methyl]amino]cyclopentanecarbonitr... Impurity CS-T-51015 924669-64-7 Enquire
2-Aminocyclopentanemethanol Impurity CS-T-02325 4492-47-1 Enquire
3-(1H-Benzoimidazol-2-yl)-1,2,2-trimethyl-cyclopentanecarbox... Impurity CS-M-21645 1185300-27-9 Enquire
3-(2-Hydroxy-phenylcarbamoyl)-1,2,2-trimethyl-cyclopentaneca... Impurity CS-M-06726 5968-14-9 Enquire
3-(4-Fluorophenylcarbamoyl)-1,2,2-trimethyl-cyclopentanecarb... Impurity CS-M-03909 304666-33-9 Enquire
3-Aminocyclopentanecarboxylic Acid Impurity CS-DJ-01138 89614-96-0 Enquire
3-Diethylcarbamoyl-1,2,2-trimethyl-cyclopentanecarboxylic ac... Impurity CS-M-04497 73889-60-8 Enquire
4-oxo-cyclopentane-cis-1,2-dicarboxylic acid dimethyl ester Impurity CS-EM-02766 1001666-74-5 Enquire
cis-1,2-trans-3-Trimethylcyclopentane (Relative Stereochemis... Impurity CS-T-87847 15890-40-1 Enquire
cis-2-Aminocyclopentanecarbonitrile Impurity CS-T-47724 874293-75-1 Enquire
cis-N,N-Dibenzyl-1,2-cyclopentanedicarboxamide Impurity CS-T-88451 1797131-60-2 Enquire
Cyclopentanecarboxylic acid (2-piperidin-2-yl-ethyl)-amide d... Impurity CS-M-29296 1185304-01-1 Enquire
Cyclopentanecarboxylic acid (2-piperidin-4-yl-ethyl)-amide h... Impurity CS-M-29243 1185296-32-5 Enquire
Cyclopentanethiol Impurity CS-M-25951 1679-07-8 Enquire
dl-trans-4-Oxocyclopentane-1,2-carboxylic acid Impurity CS-CG-00173 1703-61-3 Enquire
Ethyl 1-cyanocyclopentanecarboxylate Impurity CS-M-29219 28247-14-5 Enquire
Ethyl 2-oxocyclopentanecarboxylate Impurity CS-M-25998 611-10-9 Enquire
Isopropylcyclopentane Impurity CS-T-29904 3875-51-2 Enquire
Methyl cyclopentanecarboxylate Impurity CS-M-47177 4630-80-2 Enquire
Methyl(1S*,2R*,3R*)-3-hydroxy-2-[(E)-4-hydroxy-4-methyl-1-oc... Impurity CS-O-35855 Not Available Enquire
N-[(2'-Cyano[1,1'-biphenyl]-4-yl)methyl]-1-[(1-oxopentyl)ami... Impurity CS-T-13965 141745-71-3 Enquire
N-Methylcyclopentanecarboxamide Impurity CS-M-47170 4492-50-6 Enquire
trans-1,2-Dimethylcyclopentane Impurity CS-T-53442 822-50-4 In Stock
trans-1,3-cyclopentanediol Impurity CS-DV-03773 59719-74-3 Enquire
trans-1,3-Dimethylcyclopentane Impurity CS-T-53440 1759-58-6 Enquire
trans-1-Methyl-2-(4-methylpentyl)cyclopentane Impurity CS-T-34218 66553-50-2 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-Amino cyclopentane nitrile HCl Intermediate CS-T-02263 16195-83-8 In Stock
Boc-trans-2-aminocyclopentanecarboxylic acid Intermediate CS-O-49661 136315-71-4 Enquire
Ethyl cyclopentanecarboxylate Intermediate CS-AB-02585 5453-85-0 In Stock
Methyl cyclopentanepropanoate Intermediate CS-ED-42219 4300-02-1 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1R,2R)-2-hydroxycyclopentanecarboxylic acid Fine Chemicals CS-O-54441 1443511-34-9 Enquire
2,4-dimethylcyclopentane-1,3-dione Fine Chemicals CS-ED-01057 34598-80-6 In Stock
3-Hydroxycyclopentaneacetic acid Fine Chemicals CS-O-49943 102539-66-2 Enquire
Benzyl 3-oxocyclopentanecarboxylate Fine Chemicals CS-O-50194 130761-99-8 Enquire
Cyclopentane Fine Chemicals CS-DA-00197 287-92-3 In Stock
(1R,3S)-1,2,2-Trimethyl-1,3-cyclopentanedimethanol Fine Chemicals CS-O-37375 68510-42-9 Enquire
1,2-Cyclopentanedicarboxylic acid Fine Chemicals CS-ZH-11109 50483-99-3 Enquire
1,2-Cyclopentanedicarboxylic anhydride Fine Chemicals CS-MM-79646 5763-49-5 Enquire
1,2-Dimethyl cyclopentane Fine Chemicals CS-O-37077 2452-99-5 Enquire
1,3-Dimethyl cyclopentane Fine Chemicals CS-O-37078 2453-00-1 Enquire
3-(methoxycarbonyl)cyclopentane-1-carboxylic acid Fine Chemicals CS-O-49944 84545-00-6 Enquire
cis-1,2-Cyclopentanediol Fine Chemicals CS-BX-01005 5057-98-7 Enquire
cyclopentane-1,2-dione Fine Chemicals CS-ZE-05067 3008-40-0 Enquire
Cyclopentanecarboxaldehyde Fine Chemicals CS-T-73149 872-53-7 Enquire
Ethylcyclopentane Fine Chemicals CS-DE-01548 1640-89-7 Enquire
Methyl 1-fluorocyclopentane-1-carboxylate Fine Chemicals CS-O-38031 1849313-42-3 Enquire
Nitrocyclopentane Fine Chemicals CS-ZJ-12583 2562-38-1 Enquire
Trans-cyclopentane-1,2-diamine dihydrochloride Fine Chemicals CS-O-36747 99363-25-4 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-(4-(1-methoxy-1-oxopropan-2-yl)benzyl)-2-hydroxycyclopenta... Building Blocks CS-O-59426 89675-48-9 Enquire
1-(cyclopentylamino)cyclopentane-1-carbonitrile Building Blocks CS-O-45049 1018266-15-3 Enquire
2-dodecanoylcyclopentanecarboxylic acid Building Blocks CS-O-47945 Not Available Enquire
(-)-(1R,3S)-N-Fmoc-3-aminocyclopentanecarboxylic acid Building Blocks CS-T-77729 220497-67-6 Enquire
(+)-(1S,3R)-N-Fmoc-3-aminocyclopentanecarboxylic acid Building Blocks CS-T-77073 220497-66-5 Enquire
(1R,2R)-Fmoc-2-aminocyclopentane carboxylic acid Building Blocks CS-T-77348 359586-69-9 Enquire
(1R,2S)-2-Amino-1-(N-boc-amino)cyclopentane Building Blocks CS-T-64744 721395-15-9 Enquire
1-pentyl-2-propyl-Cyclopentane Building Blocks CS-ED-01356 62199-51-3 Enquire
3-Fluorocyclopentanecarboxylic Acid Building Blocks CS-TB-51978 1508595-64-9 Enquire
cis-Fmoc-2-amino-1-cyclopentanecarboxylic Acid Building Blocks CS-T-77782 352707-76-7 Enquire
Fmoc-1-aminocyclopentane-1-carboxylic acid Building Blocks CS-M-29448 117322-30-2 Enquire
Fmoc-1-aminomethyl-cyclopentane carboxylic acid Building Blocks CS-T-77227 946727-65-7 Enquire