223787-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 223787-74-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,7,8 and 7 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 223787-74:
(8*2)+(7*2)+(6*3)+(5*7)+(4*8)+(3*7)+(2*7)+(1*4)=154
154 % 10 = 4
So 223787-74-4 is a valid CAS Registry Number.