l-tert-leucine methyl ester hydrochloride 63038-27-7

payment method: t/t
product name: l-tert-leucine methyl ester hydrochloride cas#:63038-27-7 synonyms: l-tertiary leucine methyl ester hcl
molecular formula: c7h15no2.hcl molecular weight: 181.66
manufacture time: 2013-06-21 batch no.:20130621-1
testing time: 2013-07-10 expiry time: 2015-06
specification:
item standard analysis data
appearance white to off-white powder conforms
chromatographic purity
(% area normalization, by hplc) not less than 99.0% 99.5%
l-tert leucine not more than0.5% conforms
any other individual impurity not more than0.5% conforms
total impurities not more than 1.0% conforms
loss on drying(% w/w )(dry 1.0g sample at 80℃ under vacuum for 3hours ) not more than 0.5% 0.37%
content of d-tert-leucine methyl ester(% area normalization, by hplc) not more than 0.15% conforms
assay （% w/w o dried basis, by hplc） 98.0-102.0% 99.6%
conclusion the product conforms to the standard

63038-27-7