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

Entacapone Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Entacapone-d10 Stable Isotopes CS-O-06584 1185241-19-3 In Stock
N,N-Bis-desethyl, N-Methyl Entacapone-d3 Stable Isotopes CS-T-100766 1364322-41-7(unlabelled) Enquire
Entacapone-d10 (cis) Stable Isotopes CS-AI-00188 145195-63-7 (Unlabeled) Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Entacapone API CS-O-30903 130929-57-6 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(EZ)-Entacapone Impurity CS-O-52577 686349-59-7 In Stock
2,3-dinitrobenzaldehyde Impurity CS-O-60503 477535-05-0 Enquire
2,5-Dinitrobenzaldehyde Impurity CS-O-60450 1198424-70-2 Enquire
Entacapone Amide Impurity Impurity CS-EO-00290 158693-01-7 In Stock
Entacapone EP Impurity B Impurity CS-P-08892 1215039-66-9 In Stock
Entacapone EP Impurity F Impurity CS-P-07760 160391-70-8 In Stock
(2Z)-2-Cyano-N,N-diethyl-3-(4-hydroxy-3-methoxyphenyl)-2-pro... Impurity CS-O-41007 1595072-68-6 Enquire
(E)-3-O-Methyl Entacapone Impurity CS-T-32362 857629-78-8 Enquire
(E/Z)-3-O-Methyl Entacapone Impurity CS-T-32363 146698-91-1 Enquire
2-(Diethylamino)-N,N-diethylacetamide Impurity CS-T-91515 27794-54-3 Enquire
cis-Entacapone-3'-sulfate Sodium Salt Impurity CS-T-21652 158069-74-0 Enquire
Desethylentacapone Impurity CS-EO-01844 150995-46-3 Enquire
Entacapone EP Impurity A Impurity CS-T-21646 145195-63-7 Enquire
Entacapone EP Impurity D Impurity CS-P-07766 857629-79-9 Enquire
Entacapone EP Impurity E Impurity CS-P-07767 7659-29-2 Enquire
Entacapone EP Impurity G Impurity CS-P-07761 1364322-41-7 Enquire
Entacapone EP Impurity H Impurity CS-P-07762 1150310-15-8 Enquire
Entacapone EP Impurity I Impurity CS-P-07763 1364322-42-8 Enquire
Entacapone O-Sulphate Impurity CS-O-39767 Not Available Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3,4-Dihydroxy-5-nitro benzaldehyde Intermediate CS-O-31468 116313-85-0 In Stock
N,N-Diethyl-2-Cyanoacetamide Intermediate CS-O-14924 3010-20-4 In Stock


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Entacapone -3-O-beta-D-Glucuronide Glucuronide CS-O-05697 158069-75-1 In Stock
Entacapone 4-β-D-Glucuronide Glucuronide CS-T-92508 314058-42-9 Enquire
Entacapone-3-beta-D-Glucuronide Glucuronide CS-P-07765 15869-75-1 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N,N-Diethyl-2-cyanoacetamide Fine Chemicals CS-O-31469 26391-06-0 In Stock


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Entacapone Related Compound A Secondary Standards CS-SS-26073 145195-63-7 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Hydroxy-5-methoxy-2-nitrobenzaldehyde Building Blocks CS-T-96034 2454-72-0 Enquire