70837-71-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 70837-71-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,8,3 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 70837-71:
(7*7)+(6*0)+(5*8)+(4*3)+(3*7)+(2*7)+(1*1)=137
137 % 10 = 7
So 70837-71-7 is a valid CAS Registry Number.