19777-98-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19777-98-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,7 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 19777-98:
(7*1)+(6*9)+(5*7)+(4*7)+(3*7)+(2*9)+(1*8)=171
171 % 10 = 1
So 19777-98-1 is a valid CAS Registry Number.
19777-98-1Relevant articles and documents
THE ASYMMETRIC TOTAL SYNTHESIS OF (+)-RETICULINE
Meyers, A. I.,Guiles, Joseph
, p. 295 - 301 (2007/10/02)
The synthesis of the title compound was accomplished via chiral formamidines in 5 steps (30.4percent overall) and 98.6percent ee.