179902-23-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 179902-23-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,9,9,0 and 2 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 179902-23:
(8*1)+(7*7)+(6*9)+(5*9)+(4*0)+(3*2)+(2*2)+(1*3)=169
169 % 10 = 9
So 179902-23-9 is a valid CAS Registry Number.