Dibenzo[a,g]biphenylene is a polycyclic aromatic hydrocarbon (PAH) consisting of two benzene rings fused together with a third benzene ring attached to one of the carbon atoms of the first two rings. It is a colorless solid with a molecular formula of C20H12 and a molecular weight of 252.31 g/mol. Dibenzo[a,g]biphenylene is known for its potential environmental and health impacts, as it is classified as a probable human carcinogen by the International Agency for Research on Cancer (IARC). Dibenzo[a,g]biphenylene is formed during the incomplete combustion of organic materials, such as coal, oil, and tobacco, and can be found in air, water, and soil. Due to its persistence and toxicity, it is a subject of concern in environmental monitoring and risk assessment.
The CAS Registry Mumber 252-44-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 2,5 and 2 respectively; the second part has 2 digits, 4 and 4 respectively. Calculate Digit Verification of CAS Registry Number 252-44: (5*2)+(4*5)+(3*2)+(2*4)+(1*4)=48 48 % 10 = 8 So 252-44-8 is a valid CAS Registry Number.