1242157-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1242157-16-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,2,1,5 and 7 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1242157-16:
(9*1)+(8*2)+(7*4)+(6*2)+(5*1)+(4*5)+(3*7)+(2*1)+(1*6)=119
119 % 10 = 9
So 1242157-16-9 is a valid CAS Registry Number.