639055-97-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 639055-97-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,9,0,5 and 5 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 639055-97:
(8*6)+(7*3)+(6*9)+(5*0)+(4*5)+(3*5)+(2*9)+(1*7)=183
183 % 10 = 3
So 639055-97-3 is a valid CAS Registry Number.