156666-15-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156666-15-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,6,6 and 6 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 156666-15:
(8*1)+(7*5)+(6*6)+(5*6)+(4*6)+(3*6)+(2*1)+(1*5)=158
158 % 10 = 8
So 156666-15-8 is a valid CAS Registry Number.