3781-40-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3781-40-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,8 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 3781-40:
(6*3)+(5*7)+(4*8)+(3*1)+(2*4)+(1*0)=96
96 % 10 = 6
So 3781-40-6 is a valid CAS Registry Number.