56784-81-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 56784-81-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,7,8 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 56784-81:
(7*5)+(6*6)+(5*7)+(4*8)+(3*4)+(2*8)+(1*1)=167
167 % 10 = 7
So 56784-81-7 is a valid CAS Registry Number.