2784-21-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2784-21-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,7,8 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2784-21:
(6*2)+(5*7)+(4*8)+(3*4)+(2*2)+(1*1)=96
96 % 10 = 6
So 2784-21-6 is a valid CAS Registry Number.