253309-37-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 253309-37-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,3,0 and 9 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 253309-37:
(8*2)+(7*5)+(6*3)+(5*3)+(4*0)+(3*9)+(2*3)+(1*7)=124
124 % 10 = 4
So 253309-37-4 is a valid CAS Registry Number.