78654-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78654-18-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,6,5 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 78654-18:
(7*7)+(6*8)+(5*6)+(4*5)+(3*4)+(2*1)+(1*8)=169
169 % 10 = 9
So 78654-18-9 is a valid CAS Registry Number.