215654-41-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 215654-41-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,5,6,5 and 4 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 215654-41:
(8*2)+(7*1)+(6*5)+(5*6)+(4*5)+(3*4)+(2*4)+(1*1)=124
124 % 10 = 4
So 215654-41-4 is a valid CAS Registry Number.