631899-53-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 631899-53-1 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 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 631899-53:
(8*6)+(7*3)+(6*1)+(5*8)+(4*9)+(3*9)+(2*5)+(1*3)=191
191 % 10 = 1
So 631899-53-1 is a valid CAS Registry Number.