181634-57-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 181634-57-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,6,3 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 181634-57:
(8*1)+(7*8)+(6*1)+(5*6)+(4*3)+(3*4)+(2*5)+(1*7)=141
141 % 10 = 1
So 181634-57-1 is a valid CAS Registry Number.
181634-57-1Relevant articles and documents
A convenient synthesis of benzo[c]phenanthridine alkaloid, chelerythrine, by the palladium-assisted internal biaryl coupling reaction
Harayama, Takashi,Akiyama, Toshihiko,Kawano, Kazuko
, p. 1634 - 1636 (1996)
Total synthesis of chelerythrine, a benzo[c]phenanthridine alkaloid, was accomplished via the internal aryl-aryl coupling reaction of halo-amide (4) by the palladium-assisted cyclization reaction.
