The CAS Registry Mumber 37460-44-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,4,6 and 0 respectively; the second part has 2 digits, 4 and 4 respectively. Calculate Digit Verification of CAS Registry Number 37460-44: (7*3)+(6*7)+(5*4)+(4*6)+(3*0)+(2*4)+(1*4)=119 119 % 10 = 9 So 37460-44-9 is a valid CAS Registry Number.