chloro[2,3,7,8,12,13,17,18-octachloro-5,10,15,20-tetrakis(p-tert-butylphenyl)porphyrinato](benzonitrile)rhodium(III) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 213481-25-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,4,8 and 1 respectively; the second part has 2 digits, 2 and 5 respectively. Calculate Digit Verification of CAS Registry Number 213481-25: (8*2)+(7*1)+(6*3)+(5*4)+(4*8)+(3*1)+(2*2)+(1*5)=105 105 % 10 = 5 So 213481-25-5 is a valid CAS Registry Number.