142055-27-4 Usage
General Description
L-Cysteine, N-[(1,1-dimethylethoxy)carbonyl]-S-[2-(2,4-dinitrophenyl)ethyl]- is a compound that combines the amino acid L-Cysteine with a protective group and a dinitrophenyl group. The protective group, dimethylethoxy carbonyl, is commonly used to protect reactive functional groups during chemical reactions. The dinitrophenyl group is often used as a chromophore for detection and quantification purposes in analytical chemistry. L-Cysteine,
N-[(1,1-dimethylethoxy)carbonyl]-S-[2-(2,4-dinitrophenyl)ethyl]- may have various applications in chemistry, biochemistry, and pharmaceutical research where the unique properties of the different functional groups can be exploited for specific purposes.
Check Digit Verification of cas no
The CAS Registry Mumber 142055-27-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,0,5 and 5 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 142055-27:
(8*1)+(7*4)+(6*2)+(5*0)+(4*5)+(3*5)+(2*2)+(1*7)=94
94 % 10 = 4
So 142055-27-4 is a valid CAS Registry Number.
142055-27-4Relevant articles and documents
S-2-(2,4-dinitrophenyl)ethyl-L-cysteine: A new derivative for solid-phase peptide synthesis
Royo,Garcia-Echeverria,Giralt,Eritja,Albericio
, p. 2391 - 2394 (2007/10/02)
A new acid stable protecting group for the sulfhydryl function of cysteine is described. The S-2-(2,4-dinitrophenyl)ethyl-L-cysteine derivative is fully compatible with the Boc/Bzl solid-phase peptide synthesis strategy and can be smoothly and quantitatively removed to give the free thiol or a disulfide bridge.
