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

Cilostazol Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4’’-Hydroxy-cilostazol-d5 Stable Isotopes CS-T-101316 87153-04-6 (Unlabelled) Enquire
4-trans Hydroxy Cilostazol-d5 Stable Isotopes CS-P-07339 87153-04-6 (Unlabelled) In Stock
Cilostazol D2 Stable Isotopes CS-O-39275 1073608-03-3 Enquire
Cilostazol D6 Stable Isotopes CS-O-39274 1246641-05-3 Enquire
Cilostazol-d11 Stable Isotopes CS-O-02961 1073608-02-2 In Stock
3,4-Dehydro Cilostazol D11 Stable Isotopes CS-O-13319 1073608-13-5 Enquire
4-cis-Hydroxy Cilostazold5 Stable Isotopes CS-P-07340 87153-06-8 Enquire
Cilostazol D4 Stable Isotopes CS-T-51131 1215541-47-1 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Cilostazol API CS-O-00531 73963-72-1 In Stock


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3,4-Dehydro Cilostazol Metabolite CS-T-14867 73963-62-9 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
5-(4-Chlorobutyl)-1-cyclohexyltetrazole Impurity CS-O-31646 73963-42-5 In Stock
5-(cyclohexylamino)-5-oxopentyl 5-hydroxypentanoate Impurity CS-O-47210 Not Available Enquire
5-Chloro-3,4-dihydroquinolin-2(1H)-one Impurity CS-O-47209 72995-15-4 Enquire
Cilostazol Impurity 11 Impurity CS-EO-02814 2386790-35-6 Enquire
Cilostazol Impurity 12 Impurity CS-O-46458 940062-34-0 Enquire
Cilostazol Impurity 12 Impurity CS-EO-02815 Not Available Enquire
Cilostazol Impurity 3 Impurity CS-EO-02816 934533-78-5 Enquire
Cilostazol Impurity 4 Impurity CS-EO-03425 87032-92-6 Enquire
Cilostazol related compound C Impurity CS-T-51454 865792-18-3 In Stock
3,4-Dehydro Cilostazol Dimer Impurity CS-O-39290 2115699-14-2 Enquire
3-Chloro-N-(3-hydroxyphenyl)-propionamide Impurity CS-O-31476 19314-10-4 Enquire
4-(2-Oxo-1,2,3,4-tetrahydroquinolin-6-yl)oxy Cilostazol Impurity CS-T-84377 1796891-27-4 Enquire
4”-Hydroxycilostazol Impurity CS-O-41370 1287665-13-7 Enquire
5-(4-azidobutyl)-1-cyclohexyl-1H-tetrazole Impurity CS-O-41328 Not Available Enquire
5-Butyl-1-cyclohexyl-1H-tetrazole Impurity CS-O-39287 697796-01-3 Enquire
6,​6'-​[[4-​(1-​cyclohexyl-​1H-​tetrazol-​5-​yl)​butylidene]... Impurity CS-O-39292 2117656-40-1 Enquire
6,​6'-​oxybis(methylene)​bis[3,​4-​dihydro-2(1H)​-​Quinolino... Impurity CS-O-39293 2115698-08-1 Enquire
Cilostazol Dimer Impurity CS-O-39289 2115698-98-9 Enquire
Cilostazol Impurity 2 Impurity CS-EO-01070 934533-79-6 Enquire
Cilostazol Impurity 5 Impurity CS-EO-02019 1424857-90-8 Enquire
Cilostazol open ring Impurity Impurity CS-O-39286 1797509-92-2 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
6-Hydroxy-3,4-dihydro-1H-quinoline-2-one Intermediate CS-O-05590 54197-66-9 In Stock


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Cilostazol Secondary Standards CS-SS-24483-1GM 73963-72-1 Enquire
Cilostazol Related Compound A Secondary Standards CS-SS-25604-100MG 54197-66-9 Enquire
Cilostazol Related Compound C Secondary Standards CS-SS-24632-100MG 865792-18-3 Enquire