281658-10-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 281658-10-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,1,6,5 and 8 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 281658-10:
(8*2)+(7*8)+(6*1)+(5*6)+(4*5)+(3*8)+(2*1)+(1*0)=154
154 % 10 = 4
So 281658-10-4 is a valid CAS Registry Number.