957489-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 957489-56-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,7,4,8 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 957489-56:
(8*9)+(7*5)+(6*7)+(5*4)+(4*8)+(3*9)+(2*5)+(1*6)=244
244 % 10 = 4
So 957489-56-4 is a valid CAS Registry Number.