638995-71-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 638995-71-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,8,9,9 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 638995-71:
(8*6)+(7*3)+(6*8)+(5*9)+(4*9)+(3*5)+(2*7)+(1*1)=228
228 % 10 = 8
So 638995-71-8 is a valid CAS Registry Number.