10ξ-oxo-2,4,9,10ξ-tetraphenyl-(3ac,9ac)-3a,4,9,9a-tetrahydro-10λ5-4r,9c-epiphosphano-benzo[f]indole-1,3-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 42078-52-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,7 and 8 respectively; the second part has 2 digits, 5 and 2 respectively. Calculate Digit Verification of CAS Registry Number 42078-52: (7*4)+(6*2)+(5*0)+(4*7)+(3*8)+(2*5)+(1*2)=104 104 % 10 = 4 So 42078-52-4 is a valid CAS Registry Number.