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J & K SCIENTIFIC LTD.
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010-82848833 400-666-7788 |
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jkinfo@jkchemical.com |
| Products Intro: |
Product Name:N-Pivaloyl-L-
CAS:33019-85-1
Package:250Mg,25Mg
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| Company Name: |
Shanghai Hanhong Scientific Co.,Ltd.
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| Tel: |
021-021-64543801 13764082696 |
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2355241799@qq.com |
| Products Intro: |
Product Name:N-Pivaloyl-L-tyrosine
CAS:33019-85-1
Purity:98% Remarks:A02174
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| Company Name: |
Chemsky (shanghai) International Co.,Ltd
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| Tel: |
021-50135380 |
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shchemsky@sina.com |
| Products Intro: |
Product Name:N-Pivaloyl-L-
CAS:33019-85-1
Purity:98+% Package:1Mg;5Mg;10Mg;50Mg;100Mg;500Mg
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| Company Name: |
Hangzhou Sage Chemical Co., Ltd.
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| Tel: |
+86057186818502 13588463833 |
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info@sagechem.com |
| Products Intro: |
Product Name:L-Tyrosine, N-(2,2-diMethyl-1-oxopropyl)-
CAS:33019-85-1
|
| Company Name: |
ChemStrong Scientific Co.,Ltd
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| Tel: |
0755-0755-66853366 13670046396 |
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sales@chem-strong.com |
| Products Intro: |
Product Name:N-Pivaloyl-L-tyrosine
CAS:33019-85-1
Purity:95% HPLC Package:10mg;25mg;50mg;100mg
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| | N-Pivaloyl-L-tyrosine Basic information |
| | N-Pivaloyl-L-tyrosine Chemical Properties |
| Melting point | >58°C (dec.) | | storage temp. | Hygroscopic, Refrigerator, under inert atmosphere | | solubility | Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly), Water (Slightly) | | form | Solid | | color | White to Pale Beige | | Stability: | Hygroscopic |
| | N-Pivaloyl-L-tyrosine Usage And Synthesis |
| Uses | N-Pivaloyl-L-tyrosine can be used in peptide N-terminal amino acid determination. | | Preparation | Preparation of N-Pivaloyl-L-tyrosine Ethyl Ester
N-Pivaloyl-L-tyrosine could not be prepared from L-tyrosine following the previous method. Under the same conditions used for the preparation of IK, 90% of the starting material remained unreacted. N-Pivaloyl-L-tyrosine Ethyl Ester was, however, made from Ie by mild hydrolysis with dilute sodium hydroxide solution and subsequent esterification with absolute ethyl alcohol saturated with dry HCl gas. The material after chromatography on florisil was obtained as an oil. Comparison of the mobility with Ie on thin-layer chromatography in two solvent systems (I and 11) as well as conversion to Ie by further acylation confirmed the identity of the material. |
| | N-Pivaloyl-L-tyrosine Preparation Products And Raw materials |
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