Keto-pantoyllactone is assayed by the ketopantoyl lactone-dependent oxidation of nicotinamide adenine dinucleotide phosphate.

Universal TT epitope P2 (830-844)

2-Hydroxyl emodin-1-methyl ether (Compound 5) is an anthraquinone that can be isolated from the seeds of Cassia obtusifolia.