. . . . . . . . . . . . . . . . "Si-Joon Lee, Hee-Young Jung, \"Alpha-tocopherol 4-aminobenzoic acid ester compounds and method for preparing the same.\" U.S. Patent US6222051, issued January, 1986."@en . "A member of the vitamin B complex. It used to be common in sunscreening agents until found to also be a sensitizer. The potassium salt is used therapeutically in fibrotic skin disorders. [PubChem]"@en . . . . "150-13-0"@en . . . . . . . . . "experimental"@en . . . . . . . . . . . . . . "4-Aminobenzoic Acid"@en . . .