1021231-37-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1021231-37-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,1,2,3 and 1 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1021231-37:
(9*1)+(8*0)+(7*2)+(6*1)+(5*2)+(4*3)+(3*1)+(2*3)+(1*7)=67
67 % 10 = 7
So 1021231-37-7 is a valid CAS Registry Number.