Compound: Diphenolic acid
SMILES: O=C(O)CCC(c1ccc(O)cc1)(c2ccc(O)cc2)C
InChIKey: VKOUCJUTMGHNOR-UHFFFAOYSA-N
Synonyms: Diphenolic acid, 126-00-1, 4,4-Bis(4-hydroxyphenyl)valeric acid, 4,4-Bis(4-hydroxyphenyl)pentanoic acid, Benzenebutanoic acid, 4-hydroxy-gamma-(4-hydroxyphenyl)-gamma-methyl-, 2SIZ2CO5L3, DTXSID0022436, NSC-3371, 4-Hydroxy-gamma-(4-hydroxyphenyl)-gamma-methylbenzenebutanoic acid, DTXCID302436, 4,4'-Bis(4-hydroxyphenyl)valeric acid, RefChem:506561, 204-763-2, 4,4-Bis(p-hydroxyphenyl)valeric acid, 4,4-Bis(p-hydroxyphenyl)pentanoic acid, NSC 3371, MFCD00002800, NSC34824, Valeric acid, 4,4-bis(p-hydroxyphenyl)-, NSC-34824, Benzenebutanoic acid, 4-hydroxy-.gamma.-(4-hydroxyphenyl)-.gamma.-methyl-, .gamma.,.gamma.-Bis(p-hydroxyphenyl)valeric acid, 224963-03-5, Valeric acid,4-bis(p-hydroxyphenyl)-, CAS-126-00-1, EINECS 204-763-2, UNII-2SIZ2CO5L3, CCRIS 8802, 4,4-bis(4-hydroxyphenyl)-n-valeric acid, NCIStruc1_000380, NCIStruc2_000328, NCIOpen2_002054, Diphenolic Acid Methyl Ester, Oprea1_138438, SCHEMBL75695, DIPHENOLIC ACID [MI], MLS001061266, BIDD:ER0029, CHEMBL1325931, CHEBI:34721, NSC3371, BDBM176752, BP_09, HMS3039E11, Benzenebutanoic acid, 4-hydroxy-|A-(4-hydroxyphenyl)-|A-methyl-, NCI34824, NSC55069, Tox21_202255, Tox21_302993, AC8435, CCG-38130, MSK8751-100B, NCGC00013399, NSC-55069, SBB009924, AKOS015915011, MSK8751-1000B, CS-W010019, EBC-611377, NCGC00013399-02, NCGC00013399-03, NCGC00013399-04, NCGC00013399-05, NCGC00013399-06, NCGC00090748-01, NCGC00090748-02, NCGC00090748-03, NCGC00256409-01, NCGC00259804-01, 4,4-bis(4'-hydroxyphenyl)pentanoic acid, 4,4-Bis(4-hydroxyphenyl) pentanoic acid, 4,4-bis-(4-hydroxyphenyl)pentanoic acid, AC-15575, AS-15217, FD158925, NCI60_003095, SMR001227195, ST013888, SY036843, US9688816, F, 4,4-Bis(4'-hydroxy-phenyl)pentanoic acid, CAS# 7297-85-0, DB-015223, D1274, NS00013607, 4,4-Bis(4-hydroxyphenyl)valeric acid, 95%, Diphenolic acid Solution in Acetone, 100ug/mL, Diphenolic acid Solution in Acetone, 1000ug/mL, EN300-18532169, F791022, Q3604519, .GAMMA.,.GAMMA.-BIS-(P-HYDROXYPHENYL)VALERIC ACID, 4-HYDROXY-.GAMMA.-(4-HYDROXYPHENYL)-.GAMMA.-METHYLBENZENEBUTANOIC ACID
Theoretical properties:
molecular_formula: C17H18O4
molecular_weight: 286.32 g/mol
exact_mass: 286.12050905 g/mol
formal_charge: 0
hydrogen_bond_donor_count: 3
hydrogen_bond_acceptor_count: 4
rotatable_bond_count: 5
heavy_atom_count: 21
topological_polar_surface_area: 77.8 Å²
isotope_atom_count: 0
covalently_bonded_unit_count: 1
Physical properties:
Descriptions:
pubchem: Diphenolic acid is a bisphenol.
chembl: Unnamed Compound is a small molecule listed in the ChEMBL database but has not progressed to an approved clinical phase.
wikipedia: Diphenolic acid is a carboxylic acid with molecular formula C17H18O4.  Its IUPAC name is 4,4-bis(4-hydroxyphenyl)pentanoic acid, and it can be prepared by the condensation reaction of phenol with levulinic acid in the presence of hydrochloric acid. 
The equation for this synthesis is: 2 C6H5OH + CH3C(O)CH2CH2COOH → CH3C(p-C6H4OH)2CH2CH2COOH + H2O
Diphenolic acid is a solid at room temperature, melting at 168–171 °C and boiling at 507 °C.  According to its MSDS, diphenolic acid is soluble in ethanol, isopropanol, acetone, acetic acid, and methyl ethyl ketone, but insoluble in benzene, carbon tetrachloride, and xylene.
Diphenolic acid may be a suitable replacement for bisphenol A as a plasticizer.
Diphenolate esters have been used to synthesize epoxy resins as a replacement for the diglycidyl ether of bisphenol A.The diglycidyl ethers of n-alkyl diphenolate esters have similar thermomechanical properties to the diglycidyl ether of bisphenol A when cured, but the viscosity and glass transition temperature vary as a function of the ester length. Diphenolate esters have also been used to synthesize polycarbonates with a potential for water solubility.