297756-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 297756-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,7,7,5 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 297756-91:
(8*2)+(7*9)+(6*7)+(5*7)+(4*5)+(3*6)+(2*9)+(1*1)=213
213 % 10 = 3
So 297756-91-3 is a valid CAS Registry Number.