131719-81-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131719-81-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,7,1 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 131719-81:
(8*1)+(7*3)+(6*1)+(5*7)+(4*1)+(3*9)+(2*8)+(1*1)=118
118 % 10 = 8
So 131719-81-8 is a valid CAS Registry Number.
131719-81-8Relevant articles and documents
Enantioselective synthesis of bislactone structure: A formal synthesis of (-)-canadensolide
Honda,Kobayashi,Tsubuki
, p. 4891 - 4894 (1990)
An enantioselective synthesis of the canadensolide-type bislactone via the versatile pyranone derived from the chiral furylcarbinol (R)-3 has been accomplished. A formal synthesis of (-)-canadensolide is also described.