1301689-09-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1301689-09-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,1,6,8 and 9 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1301689-09:
(9*1)+(8*3)+(7*0)+(6*1)+(5*6)+(4*8)+(3*9)+(2*0)+(1*9)=137
137 % 10 = 7
So 1301689-09-7 is a valid CAS Registry Number.