131897-56-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131897-56-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,8,9 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 131897-56:
(8*1)+(7*3)+(6*1)+(5*8)+(4*9)+(3*7)+(2*5)+(1*6)=148
148 % 10 = 8
So 131897-56-8 is a valid CAS Registry Number.
131897-56-8Relevant articles and documents
An enantioselective total synthesis of epiisopodophyllotoxin
Choy
, p. 2281 - 2286 (2007/10/02)
An enantioselective total synthesis of epiisopodophyllotoxin in which an asymmetric Diels- Alder reaction between a chiral butenolide and an alpha oxy ortho xylylene as the key step is described.