1956366-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1956366-21-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,9,5,6,3,6 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1956366-21:
(9*1)+(8*9)+(7*5)+(6*6)+(5*3)+(4*6)+(3*6)+(2*2)+(1*1)=214
214 % 10 = 4
So 1956366-21-4 is a valid CAS Registry Number.