139108-43-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139108-43-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,0 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 139108-43:
(8*1)+(7*3)+(6*9)+(5*1)+(4*0)+(3*8)+(2*4)+(1*3)=123
123 % 10 = 3
So 139108-43-3 is a valid CAS Registry Number.
139108-43-3Relevant articles and documents
Intramolecular Cycloadditions of Keteniminium Salts. A Practical Asymmetric Synthesis of Prostaglandins
Chen, Lian-yong,Ghosez, Leon
, p. 1181 - 1184 (2007/10/02)
The intramolecular cycloaddition of keteniminium salt 5 derived from (2S,5S)-dimethylpyrrolidine is the key step of a short synthetic route toward prostaglandins.
