2139-60-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2139-60-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,3 and 9 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2139-60:
(6*2)+(5*1)+(4*3)+(3*9)+(2*6)+(1*0)=68
68 % 10 = 8
So 2139-60-8 is a valid CAS Registry Number.