220364-44-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220364-44-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,3,6 and 4 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 220364-44:
(8*2)+(7*2)+(6*0)+(5*3)+(4*6)+(3*4)+(2*4)+(1*4)=93
93 % 10 = 3
So 220364-44-3 is a valid CAS Registry Number.
220364-44-3Relevant articles and documents
Studies on macrocyclic diterpenoids (XIX) - Total synthesis of (RR/SS)-sinulariol-B
Yue,Li
, p. 671 - 674 (1996)
The first total synthesis of (RR/SS)-sinulariol-B (1) was achieved in ten steps and ~ 10% overall yield from E-geraniol (8). The key step was the macrocyclization of precursor 5 by thioether-stabilized carbanionic alkylations.
