[(2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetraphenylporphyrinate)Fe(III)(C6F5)] is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 164528-03-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,4,5,2 and 8 respectively; the second part has 2 digits, 0 and 3 respectively. Calculate Digit Verification of CAS Registry Number 164528-03: (8*1)+(7*6)+(6*4)+(5*5)+(4*2)+(3*8)+(2*0)+(1*3)=134 134 % 10 = 4 So 164528-03-4 is a valid CAS Registry Number.