299966-23-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 299966-23-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,9,9,6 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 299966-23:
(8*2)+(7*9)+(6*9)+(5*9)+(4*6)+(3*6)+(2*2)+(1*3)=227
227 % 10 = 7
So 299966-23-7 is a valid CAS Registry Number.