The CAS Registry Mumber 1352999-96-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,5,2,9,9 and 9 respectively; the second part has 2 digits, 9 and 6 respectively. Calculate Digit Verification of CAS Registry Number 1352999-96: (9*1)+(8*3)+(7*5)+(6*2)+(5*9)+(4*9)+(3*9)+(2*9)+(1*6)=212 212 % 10 = 2 So 1352999-96-2 is a valid CAS Registry Number.