138663-51-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138663-51-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,6 and 3 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138663-51:
(8*1)+(7*3)+(6*8)+(5*6)+(4*6)+(3*3)+(2*5)+(1*1)=151
151 % 10 = 1
So 138663-51-1 is a valid CAS Registry Number.