IUPAC Name: Carbonyl dichloride ; 2,6-Dibromo-4-[2-(3,5-dibromo-4-hydroxyphenyl)propan-2-yl]phenol ; 2,4,6-Tribromophenol 
Following is the structure of TBBPA carbonate oligomer BC58 (CAS NO.71342-77-3):
                              
Empirical Formula: C₂₂H₁₅Br₇Cl₂O₄
Molecular Weight: 973.5861 g/mol
Flash Point: 206.6 °C
Enthalpy of Vaporization: 69.74 kJ/mol
Boiling Point of TBBPA carbonate oligomer BC58 (CAS NO.71342-77-3): 417.9 °C at 760 mmHg
Vapour Pressure of TBBPA carbonate oligomer BC58 (CAS NO.71342-77-3): 1.41E-07 mmHg at 25°C
Product Categories of TBBPA carbonate oligomer BC58 (CAS NO.71342-77-3): Polymers
Canonical SMILES: CC(C)(C1=CC(=C(C(=C1)Br)O)Br)C2=CC(=C(C(=C2)Br)O)Br.C1=C(C=C(C(=C1Br)O)
Br)Br.C(=O)(Cl)Cl
InChI: InChI=1S/C15H12Br4O2.C6H3Br3O.CCl2O/c1-15(2,7-3-9(16)13(20)10(17)4-7)8-5-11(18)14(21)12(19)6-8;7-3-1-4(8)6(10)5(9)2-3;2-1(3)4/h3-6,20-21H,1-2H3;1-2,10H;
InChIKey: YRHXIRYYWKOJIY-UHFFFAOYSA-N

 TBBPA carbonate oligomer BC58 , its cas register number is 71342-77-3. It also can be called Phenoxy-terminated Carbonate oligomer of tetrabromobispenol A ; Phenoxy-terminated tetrabromobisphenol A carbonate ; and 2,4,6-Tribromophenyl-terminated tetrabromobisphenol-A carbonate oligomer (RDT-7) .