The CAS Registry Mumber 60782-14-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,0,7,8 and 2 respectively; the second part has 2 digits, 1 and 4 respectively. Calculate Digit Verification of CAS Registry Number 60782-14: (7*6)+(6*0)+(5*7)+(4*8)+(3*2)+(2*1)+(1*4)=121 121 % 10 = 1 So 60782-14-1 is a valid CAS Registry Number.