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176161-18-5Maribavir Impurity 4

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Catalogue No.:	VE0028050
CAS No.:	176161-18-5
Mol. Formula:	C18H17BrCl2N2O7
Mol. Weight:	524.15 g/mol

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Additional information on CAS 176161-18-5

Parent drug

Maribavir

IUPAC Name

(2S,3S,4S,5S)-2-(Acetoxymethyl)-5-(2-bromo-5,6-dichloro-1H-benzo[d]imidazol-1-yl)tetrahydrofuran-3,4-diyl diacetate

Pharmacopeial Synonyms

N/A

Synonyms

N/A

Smiles

BrC1=NC2=CC(Cl)=C(Cl)C=C2N1[C@@H](O[C@H]3COC(C)=O)[C@@H](OC(C)=O)[C@H]3OC(C)=O

InChI

InChI=1S/C18H17BrCl2N2O7/c1-7(24)27-6-14-15(28-8(2)25)16(29-9(3)26)17(30-14)23-13-5-11(21)10(20)4-12(13)22-18(23)19/h4-5,14-17H,6H2,1-3H3/t14-,15-,16-,17-/m0/s1

Description

Maribavir Impurity 4 (CAS 176161-18-5) is a process-related and degradation impurity detected during maribavir synthesis and stability testing. Identified and quantified by HPLC, LC-MS and 1H/13C NMR, it shows a reproducible retention time and characteristic mass fragmentation useful for trace-level monitoring. Elucidation of its formation pathways, including incomplete reaction intermediates or oxidative degradation, supports targeted mitigation strategies. Available analytical data on solubility, thermal behavior, and detector response factors enable robust method validation, forced-degradation studies and specification setting to control impurity levels and ensure compliance with regulatory quality expectations.