Catalog No. Size PriceQuantity
M13822-2 Contact for quotation $100


Desfluoro-ezetimibe is a desfluoro impurity of Ezetimibe. Ezetimibe is a potent, metabolically stable cholesterol absorption inhibitor. Ezetimibe is a Niemann-Pick C1-like1 (NPC1L1) inhibitor, and is a potent Nrf2 activator.

Product information

CAS Number: 302781-98-2

Molecular Weight: 391.43

Formula: C24H22FNO3

Chemical Name: (3R,4S)-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-(4-hydroxyphenyl)-1-phenylazetidin-2-one

Smiles: OC1C=CC(=CC=1)[C@@H]1[C@@H](CC[C@H](O)C2C=CC(F)=CC=2)C(=O)N1C1C=CC=CC=1


InChi: InChI=1S/C24H22FNO3/c25-18-10-6-16(7-11-18)22(28)15-14-21-23(17-8-12-20(27)13-9-17)26(24(21)29)19-4-2-1-3-5-19/h1-13,21-23,27-28H,14-15H2/t21-,22+,23-/m1/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

During the synthetic process development studies of Ezetimibe, an impurity was detected in the final product at levels ranging from 0.05% to 0.15% in reverse phase gradient high performance liquid chromatography (HPLC) method and its molecular weight is determined by LC–MS analysis. The impurity is Desfluoro-ezetimibe.


  1. Bellur Atici E, et al. Identification, synthesis and characterization of process related desfluoro impurity of ezetimibe and HPLC method validations. J Pharm Anal. 2015 Dec;5(6):356-370.
  2. Lee DH, et al. Ezetimibe, an NPC1L1 inhibitor, is a potent Nrf2 activator that protects mice from diet-induced nonalcoholic steatohepatitis. Free Radic Biol Med. 2016 Sep 12;99:520-532.

Products are for research use only. Not for human use.

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