78891-39-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78891-39-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,8,9 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 78891-39:
(7*7)+(6*8)+(5*8)+(4*9)+(3*1)+(2*3)+(1*9)=191
191 % 10 = 1
So 78891-39-1 is a valid CAS Registry Number.