277758-24-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 277758-24-4 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 8 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 277758-24:
(8*2)+(7*7)+(6*7)+(5*7)+(4*5)+(3*8)+(2*2)+(1*4)=194
194 % 10 = 4
So 277758-24-4 is a valid CAS Registry Number.