1377420-77-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1377420-77-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,7,4,2 and 0 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1377420-77:
(9*1)+(8*3)+(7*7)+(6*7)+(5*4)+(4*2)+(3*0)+(2*7)+(1*7)=173
173 % 10 = 3
So 1377420-77-3 is a valid CAS Registry Number.