261730-98-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 261730-98-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,1,7,3 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 261730-98:
(8*2)+(7*6)+(6*1)+(5*7)+(4*3)+(3*0)+(2*9)+(1*8)=137
137 % 10 = 7
So 261730-98-7 is a valid CAS Registry Number.