765913-39-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 765913-39-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,6,5,9,1 and 3 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 765913-39:
(8*7)+(7*6)+(6*5)+(5*9)+(4*1)+(3*3)+(2*3)+(1*9)=201
201 % 10 = 1
So 765913-39-1 is a valid CAS Registry Number.
765913-39-1Relevant articles and documents
Total synthesis of (-)-praziquantel: An anthelmintic drug
Ma, Chen,Zhang, Qian-Feng,Tan, Ye-Bang,Wang, Long
, p. 186 - 187 (2007/10/03)
The optically pure (-)-praziquantel was synthesised using phenylethylamine as starting material in 12% overall yield. The key step was achived by a chiral auxiliary mediated Pictet-Spengler reaction.