Vincristine-d3 sulfate is the deuterium labeled Vincristine sulfate. Vincristine-1 sulfate (Leurocristine, NSC-67574, 22-Oxovincaleukoblastine) is a microtubule inhibitor that disrupts microtubule polymerization by binding to beta-tubulin (with a Ki of 85 nM in bovine), arrests the cell cycle and induces apoptosis. Vincristine-1 sulfate inhibits cell replication, tumor blood flow and the proliferation of various cancer cells, while triggering effects such as oxidative stress, inflammation, calcium overload, epithelial-mesenchymal transition and peripheral neuropathic pain. Vincristine-1 sulfate upregulates the expression of various transporters and nuclear receptors, and enriches gastric cancer stem-like cells. Vincristine-1 sulfate is used in research related to various tumors including acute lymphoblastic leukemia, lymphoma, melanoma, gastric cancer, solid tumors and sarcomas[1][2][3][4][5][6][7][8].