858658-56-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 858658-56-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,8,6,5 and 8 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 858658-56:
(8*8)+(7*5)+(6*8)+(5*6)+(4*5)+(3*8)+(2*5)+(1*6)=237
237 % 10 = 7
So 858658-56-7 is a valid CAS Registry Number.