Vinca Alkaloids [Chemical/Ingredient] C25920 Vinca Alkaloids Vinca Alkaloids C0042672 M0022674 N0000007780 A group of indole-indoline dimers which are ALKALOIDS obtained from the VINCA genus of plants. They inhibit polymerization of TUBULIN into MICROTUBULES thus blocking spindle formation and arresting cells in METAPHASE. They are some of the most useful ANTINEOPLASTIC AGENTS. D014748 11200 Secologanin Tryptamine Alkaloids [Chemical/Ingredient]