(S)-2-((Methoxycarbonyl)amino)-3-methylbutanoic acid

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Chemical Name:  (S)-2-((Methoxycarbonyl)amino)-3-methylbutanoic acid
CAS.NO: 74761-42-5
Synonyms:MOC-L-Valine
(S)-2-((Methoxycarbonyl)aMino)-3-Methylbutanoic acid
(S)-2-((METHOXYCARBONYL)AMINO)-3-METHYLBUTANOICACID
L-Valine, N-(methoxycarbonyl)-

Molecular Formula: C7H13NO4
Molecular Weight:175.18200

Physical and Chemical Properties:
Density: 1.154 ± 0.06 g / cm3
Boiling point: 315.9 ± 25.0 ° C at 760 mmHg
Melting point: 109.0 to 113.0 ° C
Flash point: 144.9 ± 23.2 ° C
Refractive index: 1.457

Specification:
Appearance:White or off white powder
Purity:≥99.0%
Identification:
1. by IR):Must be comparable to the standard spectrum run under the same conditions.
2.By HPLC:Retention time of major peak in the chromatogram of sample solution should correspond to that of standard solution as obtained in chromatographic purity by HPLC.
Specific rotation(On dried basis) :Between -4.0 °and -8.0°
Water(KF) :NMT0.5%
Residue on Ignition: NMT0.5%
Purity by HPLC(%area):
Assay （On dried basis）:98.5%～102.0%
a.N-Moc-l-valine :NLT 99%
b.Impurity at RRT-1.15:NMT0.05%
C.Any major unknown impurity :NMT 0.5%
d.Total impurities:NMT 1%
N-Moc-D-valine:NMT 0.05%

Packing:
 25kg 1 cardboard drum or according to customer specified requirements
Storage:This product is white or off white powder, odorless, soluble in water,
 insoluble in alcohol.
Application:  Pharmaceutical Intermediates Ledipasvir, Drug Development.Intermediates of Daclatasvir CAS:1009119-64-5.

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