6978-52-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6978-52-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,9,7 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 6978-52:
(6*6)+(5*9)+(4*7)+(3*8)+(2*5)+(1*2)=145
145 % 10 = 5
So 6978-52-5 is a valid CAS Registry Number.