N-(Methoxycarbonyl)-L-valine ;MOC-L-Valine CAS No.: 74761-42-5 Appearance:White to Off-white Crystalline powder Purity:≥99.0% Isomers:≤0.5% Usage:Used as Ledipasvir Intermediate Ledipasvir Intermediates: CAS No.: 74761-42-5 CAS No.: 1129634-44-1  CAS No.: 1441673-92-2 CAS No.: 1378387-81-5  CAS No.: 1441670-89-8 CAS No.: 291775-59-2  CAS No.: 1256387-74-2 CAS No.: 1256387-87-7  CAS No.: 1256388-51-8