1021001-13-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1021001-13-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,1,0,0 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1021001-13:
(9*1)+(8*0)+(7*2)+(6*1)+(5*0)+(4*0)+(3*1)+(2*1)+(1*3)=37
37 % 10 = 7
So 1021001-13-7 is a valid CAS Registry Number.