261505-37-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 261505-37-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,1,5,0 and 5 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 261505-37:
(8*2)+(7*6)+(6*1)+(5*5)+(4*0)+(3*5)+(2*3)+(1*7)=117
117 % 10 = 7
So 261505-37-7 is a valid CAS Registry Number.