257622-17-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 257622-17-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,6,2 and 2 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 257622-17:
(8*2)+(7*5)+(6*7)+(5*6)+(4*2)+(3*2)+(2*1)+(1*7)=146
146 % 10 = 6
So 257622-17-6 is a valid CAS Registry Number.
257622-17-6Relevant articles and documents
Novel zinc mediated indole ring opening of isoreserpine
Berner, Mathias,Tolvanen, Arto,Lounasmaa, Mauri,Jokela, Reija
, p. 2941 - 2948 (2007/10/03)
Reaction of reserpine'(1) with Zn/TFA resulted in isoreserpine (2), dihydro compound (7), and amino compound (8) via initial epimerization at C- 3. The latter two compounds constitute a novelty in indole alkaloid chemistry: the dihydro compound (7) posses