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191655-63-7

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191655-63-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 191655-63-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,6,5 and 5 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 191655-63:
(8*1)+(7*9)+(6*1)+(5*6)+(4*5)+(3*5)+(2*6)+(1*3)=157
157 % 10 = 7
So 191655-63-7 is a valid CAS Registry Number.

191655-63-7Downstream Products

191655-63-7Relevant articles and documents

Synthesis of δ-amino acids with an ether linkage in the main chain and nucleobases on the side chain as monomer units for oxy-peptide nucleic acids

Kuwahara, Masayasu,Arimitsu, Miki,Sisido, Masahiko

, p. 10067 - 10078 (2007/10/03)

Syntheses of four N-Fmoc δ-amino acids with an ether linkage in the main chain and four different nucleobases on the side chain, Fmoc-NH- C*H(CH2-CH2-B)-CH2-O-CH2-COOH (B=thymine, uracil, N4-benzoylcytosine, and N2-isobutyrylguanine) are described. The δ-amino acids were prepared through 8-12 step synthesis starting from L-homoserine and could be linked together to form novel peptide nucleic acids (oxy-PNAs = OPNAs).

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