cas 20887-95-0, BOC-CYS-OH | Articles data ｜lookchem

Welcome to LookChem.com Sign In|Join Free

Article Database

Home > CAS Article list >
20887-95-0

Articles about 20887-95-0Total 2 be found

Article title
Article abstract
Author
Journal number and time
Download

New Amino-protective Reagents for t-Butoxycarbonylation and Benzyloxycarbonylation of Amines and Amino Acids
New amino-protective reagents for t-butoxycarbonylation and benzyloxycarbonylation of amines and amino acids have been developed. t-Butyl 2-pyridyl carbonate and t-butyl S-(2-pyridyl) thiocarbonate react cleanly with various amines and amino acids to afford N-Boc amines and N-Boc amino acids in high yields.Benzyl 2-pyridyl carbonate and O-benzyl S-(2-pyridyl) thiocarbonate are also found to be very effective in the benzyloxycarbonylation of amino acids.
Kim, Sunggak,Lee, Jae In,Yi, Kyu Yang
p. 3570 - 3575
(2007/10/02)

3-NITRO-2-PYRIDINESULFENYL GROUP FOR PROTECTION AND ACTIVATION OF THE THIOL FUNCTION OF CYSTEINE
The use of the 3-nitro-2-pyridinesulfenyl (Npys) halide, a versatile reagent in peptide chemistry, for the protection and activation of the thiol function is reported.Boc-Cys(Npys)-OH is prepared starting from bis(N-t-butyloxycarbonyl)-L-cystine.The Npys group is easily removed by treatment with a stoichiometric amount of tri-n-butylphosphine in the presence of water, but it is resistant to acids such as trifluoroacetic acid, HCl, and HF.Importantly, the cysteine residue modified with the Npys group can react selectively with free thiol of cysteine to afford a cystine disulfide bond.
Matsueda, Rei,Kimura, Takahide,Kaiser, Emil Thomas,Matsueda, Gary R.
p. 737 - 740
(2007/10/02)

More Articles about upstream products of 20887-95-0

More Articles about downstream products of 20887-95-0

Chemical Properties

Appearance/Colour :light yellow liquid
Melting Point: 67-70 °C
Boiling Point: 361.4 °C at 760 mmHg
Flash Point:172.3 °C
Density: 1.215 g/cm³
Solubility:DMSO (Slightly), Ethanol (Slightly, Sonicated), Methanol
Storage Temp.:-20°C
Vapor Pressure: 3.34E-06mmHg at 25°C
Refractive Index: 1.503
PKA: 3.57±0.10(Predicted)
BRN: 2450705
PSA: 114.43000
LogP: 1.28500

Show more

Global suppliers and manufacturers of 20887-95-0total 74 suppliers on LookChem

Company Name
Business Type
Min Order
FOB Price
Main Products
Contact

Dayang Chem (Hangzhou) Co.,Ltd.
Business Type:Lab/Research institutions
Min Order:1 Kilogram
FOB Price:USD $ 3.0-3.0 / Kilogram
Main Products:994
Country:

Simagchem Corporation
Business Type:Manufacturers
Min Order:1 Metric Ton
FOB Price:No Data
Main Products:110
Country:

Xi'an Xszo Chem Co., Ltd.
Business Type:Manufacturers
Min Order:1 Gram
FOB Price:USD $ 0.1-0.1 / Gram
Main Products:108
Country:

Chemwill Asia Co., Ltd.
Business Type:Manufacturers
Min Order:5 Kiloliter
FOB Price:USD $ 1.2-5.0 / Kiloliter
Main Products:56
Country:

Zhuozhou Wenxi import and Export Co., Ltd
Business Type:Trading Company
Min Order:10 Gram
FOB Price:USD $ 146.0-176.0 / Gram
Main Products:1
Country:

Hubei Langyou International Trading Co., Ltd
Business Type:Other
Min Order:100 Gram
FOB Price:No Data
Main Products:15
Country:

Henan Wentao Chemical Product Co., Ltd.
Business Type:Lab/Research institutions
Min Order:No Data
FOB Price:No Data
Main Products:44
Country:

Xiamen Hisunny Chemical Co.,Ltd
Business Type:Manufacturers
Min Order:No Data
FOB Price:No Data
Main Products:39
Country:

SHANGHAI T&W PHARMACEUTICAL CO., LTD.
Business Type:Lab/Research institutions
Min Order:4 Kilogram
FOB Price:No Data
Main Products:35
Country:

Ality Chemical Corporation
Business Type:Other
Min Order:No Data
FOB Price:No Data
Main Products:165
Country:

Hangzhou J&H Chemical Co., Ltd.
Business Type:Lab/Research institutions
Min Order:No Data
FOB Price:No Data
Main Products:46
Country:

Zibo Hangyu Biotechnology Development Co., Ltd
Business Type:Lab/Research institutions
Min Order:10 Gram
FOB Price:No Data
Main Products:313
Country:

Henan Tianfu Chemical Co., Ltd.
Business Type:Lab/Research institutions
Min Order:1 Gram
FOB Price:No Data
Main Products:67
Country:

Xiamen Jenny Chemical Technology Co., Ltd.
Business Type:Trading Company
Min Order:1 Milligram
FOB Price:No Data
Main Products:33
Country:

Senova Technology Company Limited
Business Type:Trading Company
Min Order:500 Gram
FOB Price:No Data
Main Products:32
Country:

Suzhou Health Chemicals Co., Ltd.
Business Type:Lab/Research institutions
Min Order:No Data
FOB Price:No Data
Main Products:9
Country:

Win-Win chemical Co.Ltd
Business Type:Lab/Research institutions
Min Order:No Data
FOB Price:No Data
Main Products:55
Country:

Greenutra Resource Inc
Business Type:Trading Company
Min Order:No Data
FOB Price:No Data
Main Products:50
Country:

Kono Chem Co.,Ltd
Business Type:Other
Min Order:No Data
FOB Price:No Data
Main Products:86
Country:

Wuxi TAA Chemical Industry Co.,LTD.
Business Type:Other
Min Order:No Data
FOB Price:No Data
Main Products:106
Country:

Post a RFQ

Cas No.:

Product Name:

Quantity:

Email:

Company name:

Valid Period:

Detailed Requirements:

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 20887-95-0

About us - Payment - Contact us - Links - Help Center - Disclaimer
SiteMap | Manufacturers | VIP Product | Suppliers | CAS | New CAS | Cas Database | Article Data | Chemical Catalog | Product Name

©2008 LookChem.com,License:ICP NO.:Zhejiang16009103 complaints:service@lookchem.com
[Hangzhou]86-571-87562588,87562561,87562573 Our Legal adviser: Lawyer