68158-74-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68158-74-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,1,5 and 8 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 68158-74:
(7*6)+(6*8)+(5*1)+(4*5)+(3*8)+(2*7)+(1*4)=157
157 % 10 = 7
So 68158-74-7 is a valid CAS Registry Number.