178697-39-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178697-39-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,6,9 and 7 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 178697-39:
(8*1)+(7*7)+(6*8)+(5*6)+(4*9)+(3*7)+(2*3)+(1*9)=207
207 % 10 = 7
So 178697-39-7 is a valid CAS Registry Number.