176643-23-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 176643-23-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,6,6,4 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 176643-23:
(8*1)+(7*7)+(6*6)+(5*6)+(4*4)+(3*3)+(2*2)+(1*3)=155
155 % 10 = 5
So 176643-23-5 is a valid CAS Registry Number.