The CAS Registry Mumber 92410-00-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,2,4,1 and 0 respectively; the second part has 2 digits, 0 and 0 respectively. Calculate Digit Verification of CAS Registry Number 92410-00: (7*9)+(6*2)+(5*4)+(4*1)+(3*0)+(2*0)+(1*0)=99 99 % 10 = 9 So 92410-00-9 is a valid CAS Registry Number.