631897-94-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 631897-94-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,1,8,9 and 7 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 631897-94:
(8*6)+(7*3)+(6*1)+(5*8)+(4*9)+(3*7)+(2*9)+(1*4)=194
194 % 10 = 4
So 631897-94-4 is a valid CAS Registry Number.