958637-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 958637-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,8,6,3 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 958637-81:
(8*9)+(7*5)+(6*8)+(5*6)+(4*3)+(3*7)+(2*8)+(1*1)=235
235 % 10 = 5
So 958637-81-5 is a valid CAS Registry Number.