1173817-67-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1173817-67-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,3,8,1 and 7 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1173817-67:
(9*1)+(8*1)+(7*7)+(6*3)+(5*8)+(4*1)+(3*7)+(2*6)+(1*7)=168
168 % 10 = 8
So 1173817-67-8 is a valid CAS Registry Number.
1173817-67-8Relevant articles and documents
Convenient synthesis of C-terminal di- and tri-peptide amides from N-protected dipeptidoylbenzotriazoles
Celik, Ilhami,Abdel-Fattah, Ashraf A.A.
experimental part, p. 4923 - 4929 (2009/10/09)
N-Protected dipeptidoylbenzotriazoles react with aqueous ammonia to give dipeptide primary amides (77-98%) and with N-unprotected α-amino amides to afford tripeptide primary amides (82-86%).