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"N-(S-benzyl-N-benzyloxycarbonyl-L-cysteinyl)-L-alanine ethyl ester" is a complex organic compound with the molecular formula C23H27NO5S. It is a derivative of L-alanine, an amino acid, and features a benzyl group attached to the nitrogen atom, a benzyloxycarbonyl group on the sulfur atom of a cysteine residue, and an ethyl ester group. N-(S-benzyl-N-benzyloxycarbonyl-L-cysteinyl)-L-alanine ethyl ester is often used in peptide synthesis as a protecting group to prevent unwanted side reactions, particularly in the formation of disulfide bonds. The benzyl and benzyloxycarbonyl groups serve to protect the thiol group of cysteine, while the ethyl ester group is a common protecting group for the carboxylic acid function of alanine. N-(S-benzyl-N-benzyloxycarbonyl-L-cysteinyl)-L-alanine ethyl ester is a key intermediate in the synthesis of peptides that require controlled conditions for the formation of disulfide bonds, which are crucial for the proper folding and function of many proteins.

4168-14-3

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4168-14-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4168-14-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,1,6 and 8 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4168-14:
(6*4)+(5*1)+(4*6)+(3*8)+(2*1)+(1*4)=83
83 % 10 = 3
So 4168-14-3 is a valid CAS Registry Number.
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