71294-94-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71294-94-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,2,9 and 4 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 71294-94:
(7*7)+(6*1)+(5*2)+(4*9)+(3*4)+(2*9)+(1*4)=135
135 % 10 = 5
So 71294-94-5 is a valid CAS Registry Number.
71294-94-5Relevant articles and documents
Chloroacetamide Photocyclization. Synthesis of 20-Deethylcatharanthine
Sundberg, Richard J.,Bloom, Jonathan D.
, p. 3382 - 3387 (2007/10/02)
20-Deethylcatharanthine, a potential precursor of vinblastine-type dimeric indole alkaloids, has been synthesized in ten steps from 1-benzenesulfonylindole.The Synthesis features a Diels-Alder reaction between 1-carbethoxy-1,2-dihydropyridine and ethyl 2-