297743-77-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 297743-77-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,7,7,4 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 297743-77:
(8*2)+(7*9)+(6*7)+(5*7)+(4*4)+(3*3)+(2*7)+(1*7)=202
202 % 10 = 2
So 297743-77-2 is a valid CAS Registry Number.