638995-72-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 638995-72-9 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 2 respectively.
Calculate Digit Verification of CAS Registry Number 638995-72:
(8*6)+(7*3)+(6*8)+(5*9)+(4*9)+(3*5)+(2*7)+(1*2)=229
229 % 10 = 9
So 638995-72-9 is a valid CAS Registry Number.