42784-65-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42784-65-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,7,8 and 4 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 42784-65:
(7*4)+(6*2)+(5*7)+(4*8)+(3*4)+(2*6)+(1*5)=136
136 % 10 = 6
So 42784-65-6 is a valid CAS Registry Number.