57304-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57304-91-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,3,0 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 57304-91:
(7*5)+(6*7)+(5*3)+(4*0)+(3*4)+(2*9)+(1*1)=123
123 % 10 = 3
So 57304-91-3 is a valid CAS Registry Number.
57304-91-3Relevant articles and documents
Synthesis of (+)-strigol, (+)-4'-EPI-strigol, and their enantiomers
Samson,Frischmuth,Berlage,Heinz,Hobert,Welzel
, p. 1411 - 1416 (1991)
A short synthesis of the title compounds amenable to large-scale preparation is reported. Key feature is a simple resolution step.
