33458-78-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33458-78-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,4,5 and 8 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 33458-78:
(7*3)+(6*3)+(5*4)+(4*5)+(3*8)+(2*7)+(1*8)=125
125 % 10 = 5
So 33458-78-5 is a valid CAS Registry Number.
33458-78-5Relevant articles and documents
Total syntheses of chelidonine and norchelidonine via an enamide-benzyne-[2+2] cycloaddition cascade
Ma, Zhi-Xiong,Feltenberger, John B.,Hsung, Richard P.
, p. 2742 - 2745 (2012/08/07)
Total syntheses of chelidonine and norchelidonine featuring an enamide-benzyne-[2 + 2] cycloaddition initiated cascade is described. The cascade includes a pericyclic ring-opening and intramolecular Diels-Alder reaction.
