31902-67-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31902-67-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,9,0 and 2 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 31902-67:
(7*3)+(6*1)+(5*9)+(4*0)+(3*2)+(2*6)+(1*7)=97
97 % 10 = 7
So 31902-67-7 is a valid CAS Registry Number.