97811-94-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97811-94-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,8,1 and 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 97811-94:
(7*9)+(6*7)+(5*8)+(4*1)+(3*1)+(2*9)+(1*4)=174
174 % 10 = 4
So 97811-94-4 is a valid CAS Registry Number.
97811-94-4Relevant articles and documents
THE RELATIVE SUSCEPTIBILITY TO RACEMIZATION OF L- AND D-RESIDUES IN PEPTIDE SYNTHESIS
Benoiton, N. Leo,Kuroda, K.,Chen, Francis M. F.
, p. 3359 - 3360 (1981)
An activated D-residue of a protected dipeptide when coupled racemizes twice as much as an activated L-residue, which is contrary to the case for couplings of acylamino acids.