21. Succinate-analogue inhibitors include the synthetic compound malonate as well as the TCA cycle intermediates, malate and oxaloacetate. 22. "' Raclopride "'is a synthetic compound that acts as a selective antagonist on D 2 dopamine receptors. 23. Much is known about the binding affinity of hundreds of synthetic compounds to the ? 1 receptor. 24. Folkman is a pioneer in research on angiogenesis and its regulation by various natural and synthetic compounds . 25. Even so, some plants effectively dismantle these synthetic compounds , according to a variety of studies and field tests. 26. Yet most of the mesdemet samples Walter and his colleagues examined contained the two synthetic compounds as well. 27. Non-covalent activators of TRPA1 also exists, such as methyl salicylate in winter green oil and the synthetic compound PF-4840154. 28. It banned synthetic compounds commonly found in synthetic marijuana, placing them under Schedule I of the Controlled Substances Act. 29. Precursors for a semi-synthetic compound known as " acetylstrophanthidin " are found within the seeds of " Strophanthus kombe ". 30. "' MK-9470 "'is a synthetic compound , which binds to the CB 1 cannabinoid receptor and functions as an inverse agonist.