221617-23-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221617-23-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,6,1 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 221617-23:
(8*2)+(7*2)+(6*1)+(5*6)+(4*1)+(3*7)+(2*2)+(1*3)=98
98 % 10 = 8
So 221617-23-8 is a valid CAS Registry Number.
221617-23-8Relevant articles and documents
Radical cyclizations. A convergent total synthesis of (±)-γ-Lycorane
Cossy, Janine,Tresnard, Ludovic,Gomez Pardo, Domingo
, p. 1125 - 1128 (2007/10/03)
(±)-γ-Lycorane has been synthesized in 10 steps from piperonylic alcohol. Two radical reactions were used successively to build the D and B rings.