67481-56-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67481-56-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,4,8 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 67481-56:
(7*6)+(6*7)+(5*4)+(4*8)+(3*1)+(2*5)+(1*6)=155
155 % 10 = 5
So 67481-56-5 is a valid CAS Registry Number.
67481-56-5Relevant articles and documents
Synthesis of Functionalized Cyclopentenecarboxaldehydes
Canonica, S.,Ferrari, M.,Jommi, G.,Sisti, M.
, p. 697 - 699 (1988)
Ozonolysis of the ethylene acetals of 2-substituted 2-cyclohexenones followed by cyclization of the intermediate 1,6-dicarbonyl compounds affords 6-substituted 7-formyl-1,4-dioxaspironon-6-enes in modest yields.The same procedure applied to protected