EUSTAB PI-172F4-Hydroxy-TEMPO (Tempol), a nitroxide free-radical compound. It is mainly used as a radical scavenger, polymerization inhibitor, and spin-label/ESR reagent, and is also known for its antioxidant (SOD-mimetic) activity.

Photocure 4456 is a highly efficient photoinitiator, which is used to initiate radical photopolymerization of ethylenically unsaturated mono- or multifunctional vinyl monomers and/or oligomers. It’s particularly suitable for applications requiring extremely high photosensitivity with low yellowing.

Photocure 4125 may be used, after adequate testing in UV curable photoresist.