291781-67-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 291781-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,1,7,8 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 291781-67:
(8*2)+(7*9)+(6*1)+(5*7)+(4*8)+(3*1)+(2*6)+(1*7)=174
174 % 10 = 4
So 291781-67-4 is a valid CAS Registry Number.
291781-67-4Relevant articles and documents
An efficient total synthesis of K-13, a non-competitive inhibitor of ACE I
Bigot, Antony,Bois-Choussy, Michèle,Zhu, Jieping
, p. 4573 - 4577 (2007/10/03)
An efficient synthesis of K-13, a non-competitive inhibitor of ACE I, with an endo biaryl ether bond is described. The key cycloetherification reaction of linear tripeptide 10 gave 17-membered macrocycle in quantitative yield. (C) 2000 Elsevier Science Ltd.
