OXi-4503 is the diphosphate prodrug of the stilbenoid combretastatin A1, originally isolated from the plant Combretum caffrum, with vascular-disrupting and antineoplastic activities. Upon administration, combretastatin A1 diphosphate (CA1P) is dephosphorylated to the active metabolite combretastatin A1 (CA1), which promotes rapid microtubule depolymerization; endothelial cell mitotic arrest and apoptosis, destruction of the tumor vasculature, disruption of tumor blood flow and tumor cell necrosis may ensue. In addition, orthoquinone intermediates, metabolized from combretastatin A1 by oxidative enzymes found to be elevated levels in some tumor types, may bind to tumor cell thiol-specific antioxidant proteins and DNA, and stimulate oxidative stress by enhancing superoxide/hydrogen peroxide production. CA1 binds to tubulin at the same site as colchicine but with higher affinity.https://www.bocsci.com/product/oxi-4503-cas-288847-35-8-353235.html

BOC Sciences is a brand of BOCSCI Inc. We leverage our wide spectrum of business in the fields of development, manufacturing, marketing, and distribution to help you make best-informed decisions tailored to your evolving needs for premium chemicals. Our complete suite of CRO services spans the entire molecule development pipeline including contract research for target identification, building blocks, compound synthesis, biochemical and cellular analysis, preclinical animal tests, and clinical studies.

Products:

BOC Sciences provides a wide range of research chemicals and biochemicals including inhibitors, building blocks, GMP Products, impurities and metabolites, APIs for Veterinary, Natural Compounds, ADCs, Stem Cell Molecule and chiral compounds.

Over eight years of successful operation in the pharmaceutical industry has enabled us to possess a full-bodied array of building blocks in numerous pack sizes. BOC Sciences is constantly seeking to expand our product lines by incorporating additional potential drug like molecules.



Services:

BOC Sciences provides a wide range of services to support the pharmaceutical industry through all stages of drug discovery including Custom Synthesis of those chemicals that are not in stock, Isotope Labeling Service, Chiral Synthesis and Resolution, Bioconjugation, PEGylation services, analytical services.

Our capacity to provide pharmaceutical discovery services across the entire spectrum of the drug discovery process has assisted many of our esteemed clients in reaching their R&D goals. We are actively improving our capabilities and capacity through new expansions in BOC Sciences’s global business.



Manufacturing services:

-> Manufacture of raw materials, registered GMP starting materials and intermediates from small scale (1kg) to commercial quantities (1000 kg);
-> Production of APIs to support drug candidate selections;
-> GLP toxicology studies and clinical studies;
-> Development and optimization of environmentally friendly process;
-> Competitive quality and price comparable to commodity chemical suppliers


Our clients



As a leading provider of building blocks, synthetic intermediates, and custom synthesis, BOC Sciences is committed to supplying cost-effective products and services, which are being utilized by our customers worldwide in molecule discovery on a daily basis to promote innovations in various industries.