307972-77-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 307972-77-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,7,9,7 and 2 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 307972-77:
(8*3)+(7*0)+(6*7)+(5*9)+(4*7)+(3*2)+(2*7)+(1*7)=166
166 % 10 = 6
So 307972-77-6 is a valid CAS Registry Number.