2357-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2357-81-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,3,5 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2357-81:
(6*2)+(5*3)+(4*5)+(3*7)+(2*8)+(1*1)=85
85 % 10 = 5
So 2357-81-5 is a valid CAS Registry Number.