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

Cyclopropane Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1R,2S)-2-[(1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl]-N... Stable Isotopes CS-T-97593 1246818-55-2 Enquire
1-(2,2-Difluoro-1,3-benzodioxol-5-yl)cyclopropane-2,2,3,3-d4... Stable Isotopes CS-T-102386 1961281-89-9 Enquire
2'-Ethoxy-[1,1'-binaphthalen]-2-yl -2,2-dimethyl-3-(2-methyl... Stable Isotopes CS-T-103253 Not Available Enquire
Acyclovir aminocyclopropane 13C carboxylate impurity Stable Isotopes CS-O-55652 915725-89-2(Unla915725-89-2(Unlabelled)belled) Enquire
Acyclovir aminocyclopropane Impurity-13C Stable Isotopes CS-O-55651 915725-89-2 Enquire
Envudeucitinib-4-Chloro-5-(1-oxopropyl-3,3,3-d3)-2-pyridinyl... Stable Isotopes CS-O-59016 2417139-44-5 Enquire
Montelukast Cyclopropaneacetamide-d6 (Impurity) Stable Isotopes CS-T-99151 Not Available Enquire
Montelukast Cyclopropaneacetonitrile-d6 Stable Isotopes CS-T-97276 Not Available Enquire
N-Ethyl-2-(hydroxymethyl)-1-phenyl-cyclopropanecarboxamide-d... Stable Isotopes CS-T-100323 Not Available Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Cyclopropane Hydrochloride API CS-O-01169 75956-59-1 Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(6'R)-2',4',6'-Trimethyl-6',7'-dihydrospiro[cyclopropane-1,5... Metabolite CS-O-43073 1817779-52-4 Enquire
N-descyclopropanecarbonyl N-butyryl Olaparib Metabolite CS-O-44961 2250243-17-3 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1R,2S)-2-(3,4-difluorophenyl)cyclopropanecarboxylic acid Impurity CS-O-49111 1414348-38-1 Enquire
(1R,2S)-2-(hydroxymethyl)-1-phenylcyclopropanecarboxylic aci... Impurity CS-O-52676 66823-04-9 Enquire
(1R,2S)-2-phenylcyclopropanecarbohydrazide Impurity CS-O-55495 1932043-12-3 Enquire
(1S,2R)-2-(3,4-difluorophenyl)cyclopropanecarboxylic acid Impurity CS-O-49107 2051515-36-5 Enquire
(1S,2R)-2-(hydroxymethyl)-1-phenylcyclopropanecarbonitrile Impurity CS-O-52678 1535163-09-7 Enquire
(1S,2S)-2-(3,4-difluorophenyl)cyclopropanecarboxylic acid Impurity CS-O-49102 1459720-31-0 Enquire
(4-fluoro-1,3-phenylene)bis((4-(cyclopropanecarbonyl)piperaz... Impurity CS-O-47416 2795135-26-9 Enquire
1,4-Dicyclopropanecarbonylpiperazine Impurity CS-O-52492 458535-34-7 Enquire
6-(cyclopropanecarboxamido)-4-((2-methoxy-3-(1-methyl-1H-1,2... Impurity CS-O-57321 ---- Enquire
6-(cyclopropanecarboxamido)-4-((2-methoxy-3-(1-methyl-1H-1,2... Impurity CS-O-57322 ---- Enquire
Acyclovir aminocyclopropane Impurity Impurity CS-O-55650 915725-89-2 Enquire
cis-1-Phenyl-2-propionylcyclopropane Impurity CS-O-43790 17517-11-2 Enquire
Methyl 1-((4-fluorophenyl)carbamoyl)cyclopropane-1-carboxyla... Impurity CS-O-44678 1345847-71-3 Enquire
Montelukast Cyclopropaneacetonitrile Impurity CS-T-58954 866923-62-8 In Stock
N-descyclopropanecarbonyl N-Acetyl Olaparib Impurity CS-O-40044 848136-41-4 In Stock
N-descyclopropanecarbonyl N-formyl Olaparib Impurity CS-O-46679 848135-84-2 Enquire
sodium (1S,2R)-2-(hydroxymethyl)-1-phenylcyclopropane-1-carb... Impurity CS-O-58012 ---- Enquire
(1R,2R)-2-(3,4-Difluorophenyl)cyclopropanecarboxamide Impurity CS-T-93590 1006376-62-0 Enquire
(1R,2R)-2-Fluorocyclopropanecarboxylic acid Impurity CS-DV-00044 127199-13-7 Enquire
(1R,3S)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxy... Impurity CS-O-16342 61914-48-5 Enquire
1-(Trifluoromethyl)cyclopropane-1-carboxylic acid methyl est... Impurity CS-M-08586 208242-25-5 Enquire
Cyclopropane-1,1-dicarboxylic acidmono methyl ester Impurity CS-M-07992 113020-21-6 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-(4-Fluorophenylcarbamoyl)cyclopropanecarboxylic acid Intermediate CS-O-32098 849217-48-7 In Stock
1-bromo-1-ethynylcyclopropane Intermediate CS-O-49043 2763756-15-4 Enquire
α-Ethylcyclopropanemethanimine Intermediate CS-O-57037 532427-25-1 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1R)-2,2-dimethyl-3-((Z)-3,3,3-trifluoroprop-1-en-1-yl)cyclo... Fine Chemicals CS-O-56392 1219734-00-5 Enquire
(1R,3R)-2,2-Dimethyl-3-[(Z)-prop-1-enyl]cyclopropanecarboxyl... Fine Chemicals CS-O-56389 84368-70-7 Enquire
(1R,3R)-3-((E)-2-cyanoprop-1-en-1-yl)-2,2-dimethylcyclopropa... Fine Chemicals CS-O-56390 1052115-15-7 Enquire
(1R,3R)-3-[(1E)-3-Methoxy-2-methyl-3-oxo-1-propen-1-yl]-2,2-... Fine Chemicals CS-O-56391 26767-71-5 Enquire
(1S,3R)-3-(2,2-difluorovinyl)-2,2-dimethylcyclopropanecarbox... Fine Chemicals CS-O-56393 94668-24-3 Enquire
1-(4-(cyclopropanecarbonyl)piperazin-1-yl)-2,2,2-trifluoroet... Fine Chemicals CS-O-60011 1467759-67-6 Enquire
1-(ethoxycarbonyl)cyclopropane-1-carboxylic acid Fine Chemicals CS-O-50190 3697-66-3 Enquire
1,1-Cyclopropanedicarboxylic Acid Fine Chemicals CS-T-74034 598-10-7 In Stock
2-methoxycyclopropanecarboxylic acid Fine Chemicals CS-ED-42208 53381-04-7 Enquire
Ethyl 1-(hydroxymethyl)cyclopropanecarboxylate Fine Chemicals CS-O-50191 3697-68-5 Enquire
rac trans-2-Phenylcyclopropanecarboxylic Acid Fine Chemicals CS-T-39417 939-90-2 In Stock
(2S,4R)-1-((S)-2-(1-fluorocyclopropanecarboxamido)-3,3-dimet... Fine Chemicals CS-O-35242 Not Available Enquire
(2S,4R)-1-((S)-2-(1-fluorocyclopropanecarboxamido)-3,3-dimet... Fine Chemicals CS-O-35244 Not Available Enquire
1-(5-bromothiophen-2-yl)cyclopropane-1-carboxylic acid Fine Chemicals CS-O-37418 1368719-33-8 Enquire
5'-bromospiro[cyclopropane-1,2'-indoline]-3'-carboxylic acid Fine Chemicals CS-O-38183 2167145-71-1 Enquire
isopropyl 3-(chloroethynyl)-2,2-dimethylcyclopropane-1-carbo... Fine Chemicals CS-O-34812 Not Available Enquire
Methyl 1-(bromomethyl)cyclopropane-1-carboxylate Fine Chemicals CS-ED-02064 43161-30-4 Enquire
methyl 3-(2,2-dichloroethyl)-2,2-dimethylcyclopropanecarboxy... Fine Chemicals CS-O-39702 68697-08-5 Enquire
tert-Butyl Cyclopropanecarboxylate Fine Chemicals CS-DJ-00885 87661-20-9 Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Nitroso N-Descyclopropanecarbaldehyde Olaparib Nitrosamine CS-O-39727 2742659-74-9 In Stock
N-Nitroso-descyclopropanecarbonyl N-butyryl Olaparib Nitrosamine CS-O-53691 ---- Enquire


Stable Isotope Reagent

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(Bromomethyl)cyclopropane -D7 Stable Isotope Reagent CS-O-47353 2256739-99-6 Enquire
Cyclopropane-1,1,2,2-d4 (gas) Stable Isotope Reagent CS-C-01526 89419-36-3 Enquire
Cyclopropane-1,1-d2 (gas) Stable Isotope Reagent CS-C-01525 65146-94-3 Enquire
Cyclopropanecarboxylic acid-d4 Stable Isotope Reagent CS-CX-00439 89924-82-3 In Stock
Cyclopropane-d5-carbonyl Chloride Stable Isotope Reagent CS-C-01774 1219794-96-3 Enquire
Cyclopropane-d6 (gas) Stable Isotope Reagent CS-C-01527 2207-64-9 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1-Methoxypentyl)cyclopropane Building Blocks CS-O-54423 94883-96-2 Enquire
1-Ethylcyclopropanecarboxaldehyde Building Blocks CS-O-56888 35358-40-8 Enquire
1-isopropylcyclopropanecarbaldehyde Building Blocks CS-O-56890 489468-09-9 Enquire
2-diiodo-1-methylcyclopropane Building Blocks CS-O-44918 653605-61-9 Enquire
6'-bromo-2',3'-dihydro-1'H-spiro[cyclopropane-1,4'-isoquinol... Building Blocks CS-O-48761 2167621-83-0 Enquire