CAS DataBase Reference:N'-(1-methoxy-9a,9b-dimethyl-3,3a,4,5,8,9,9a,9b-octahydro-1H-naphtho[1,2-c]furan-7-ylidene)-N,N-dimethyl-hydrazine(CAS DataBase Reference)
The CAS Registry Mumber 671792-24-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,1,7,9 and 2 respectively; the second part has 2 digits, 2 and 4 respectively. Calculate Digit Verification of CAS Registry Number 671792-24: (8*6)+(7*7)+(6*1)+(5*7)+(4*9)+(3*2)+(2*2)+(1*4)=188 188 % 10 = 8 So 671792-24-8 is a valid CAS Registry Number.