Boc L Pyroglutamica Acida Ethyla Ester 144978-12-1

We are offering Boc-L-Pyroglutamic Acid Ethyl Ester 144978-12-1.
Product Name: Boc-Pyr-OEt CAS#144978-12-1
Synonyms: Boc-L-Pyroglutamic acid ethyl ester Molecular Formula: C12H19NO5
Molecular Weight: 257.3
Manufacture time: 2010-02-04 Batch No.:100204
Testing time: 2010-02-04 Expiry timei 2012-02
Specifications:
ItemsStandardAnalysis data
Specific Rotation [20/D]
(C=2 in CH3CH2OH)-41A 2A -40.5A
Related Substance (TLC)One spotConforms
Melting Point (a ) 49a to 55 a 51a
Loss on DryingNot more than 0.50%0.26%
Purity (HPLC)Not less than 98.0%99.0%

Product Name: Boc-Pyr-OMe CAS#: 108963-96-8
Synonyms: Boc-L-Pyroglutamic acid methyl ester
Molecular Formula: C11H17NO5
Molecular Weight: 243.3
Manufacture time: 2012-11-01 Batch No.:20121101
Testing time: 2012-12-10 Expiry time:2014-11
Specifications:
ItemsStandardAnalysis data
AppearanceWhite crystalline powderConforms
Specific Rotation [20/D]
(c=1.039 in CHCl3)
-31.5A + 2A -30.1A
Water(KF)Not more than 0.50%0.35%
Purity Not less than 98.0%99.0%

Product Name: Benzyl-BOC-Pyroglutamate CAS#: 113400-36-5
Molecular Formula: C17H21NO5
Molecular Weight: 319.35
Manufacture time: 2012-08-11 Batch No.: 20120811
Testing time: 2013-01-12 Expiry time: 2012-08