277751-23-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 277751-23-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,7,7,5 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 277751-23:
(8*2)+(7*7)+(6*7)+(5*7)+(4*5)+(3*1)+(2*2)+(1*3)=172
172 % 10 = 2
So 277751-23-2 is a valid CAS Registry Number.