1-Propanone, 1,1''-(oxydi-4,1-phenylene)bis(2-hydroxy-2-methyl-

• CAT Number: R074771
• CAS Number: 71868-15-0
• PubChem Substance ID: 20262752
• Molecular Formula: C20H22O5
• Molecular Weight: 342.41
• Purity: ≥95%
• IUPAC Name: 2-hydroxy-1-[4-[4-(2-hydroxy-2-methylpropanoyl)phenoxy]phenyl]-2-methylpropan-1-one
• InChI: InChI=1S/C20H22O5/c1-19(2,23)17(21)13-5-9-15(10-6-13)25-16-11-7-14(8-12-16)18(22)20(3,4)24/h5-12,23-24H,1-4H3
• InChIKey: LYGZOGDWCOYSGJ-UHFFFAOYSA-N
• SMILES: CC(C)(C(=O)C1=CC=C(C=C1)OC2=CC=C(C=C2)C(=O)C(C)(C)O)O

2-Hydroxy-1-[4-[4-(2-hydroxy-2-methylpropanoyl)phenoxy]phenyl]-2-methylpropan-1-one(CAT: R074771) is a highly functionalized aromatic ketone commonly used as a photoinitiator in UV-curable resin systems, inks, coatings, and adhesives. Featuring both hydroxyl and carbonyl groups along with an extended aromatic system, it efficiently absorbs UV light and generates reactive radicals to initiate polymerization. Its structure is designed to enhance solubility in resin formulations and improve curing speed and depth. The presence of hydroxy groups also supports compatibility with various acrylate monomers.