1217509-73-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1217509-73-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,7,5,0 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1217509-73:
(9*1)+(8*2)+(7*1)+(6*7)+(5*5)+(4*0)+(3*9)+(2*7)+(1*3)=143
143 % 10 = 3
So 1217509-73-3 is a valid CAS Registry Number.
1217509-73-3Relevant articles and documents
Desymmetrization of 4-hydroxy-2,5-cyclohexadienones by radical cyclization: Synthesis of optically pure γ-lactones
Sunasee, Rajesh,Clive, Derrick L. J.
supporting information; experimental part, p. 701 - 703 (2010/06/12)
Optically pure γ-lactones fused onto a cyclohexenone are available by a radical-based method for desymmetrizing 4-hydroxy-2,5-cyclohexadienones.