Rutin, a flavonol glycoside found in many plants including buckwheat; tobacco; forsythia; hydrangea; viola, etc., which possesses healthy effects for human.

Asapiprant (S-555739) is a potent and selective DP1 receptor antagonist (Ki: 0.44 nM). It exhibited high affinity and selectivity for the DP1 receptor.

L-798106 (CM9) is a selective and potent prostaglandin-like EP3 receptor antagonist that inhibits EP4, EP1, and EP2 receptors, suppresses levels of pro-inflammatory cytokines in atherosclerosis, and attenuates PGE2-induced cough.