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Activators & Inhibitors
Chemical Modulators

Cycloheximide #2112

Citations (0)
Western blot analysis of extracts from Jurkat cells, untreated (-) , or treated with Cycloheximide (50 μg/ml, 24 hr; +), Bortezomib #2204 (10 nM, 24 hr; +), or both, using Ubiquitin Antibody #3933 (upper) or β-Actin (D6A8) Rabbit mAb #8457 (lower).
Western blot analysis of extracts from Jurkat cells, untreated (-) or treated with increasing concentrations of Cycloheximide (24 hr), using PARP Antibody #9542 (upper), Cleaved PARP (Asp214) (D64E10) XP® Rabbit mAb #5625 (middle), or β-Actin (D6A8) Rabbit mAb #8457 (lower).
Chemical structure of cycloheximide.

Product Usage Information

Cycloheximide is supplied as a lyophilized powder. For a 10 mg/ml stock, carefully weigh out and reconstitute 50 mg in 5 ml DMSO or EtOH. Working concentrations and length of treatments vary depending on the desired effect, but it is typically used at 5-50 µg/ml for 4-24 hours. Soluble in DMSO, EtOH, or MeOH.

Wear personal protective equipment. Do not empty product into drains. Do not handle until all safety precautions have been read and understood.

Safety Information: Cycloheximide is suspected of causing genetic defects. It may cause adverse reproductive effects - such as birth defect, miscarriages, or infertility. Avoid contact during pregnancy and while nursing. If exposed or concerned, get medical advice. See Safety Data Sheet (SDS).


Store lyophilized or in solution at -20ºC, desiccated. Protect from light. In lyophilized form, the chemical is stable for 24 months. Once in solution, use within 3 months to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.

Product Description

Molecular Weight 281.3 g/mol
Purity >90%
Molecular Formula C15H23NO4
CAS 66-81-9
Solubility Soluble in DMSO at 25mg/ml and in H2O at 20mg/ml.


Cycloheximide is a protein synthesis inhibitor in eukaryotes. Although its precise mechanism of action has yet to be fully elucidated, it has been shown to inhibit translation elongation through binding to the E-site of the 60S ribosomal unit and interfering with deacetylated tRNA (1-3). Although not all cell types are equally sensitive to the apoptosis-inducing effects of cycloheximide, it has been shown to induce cell death in T cells through a FADD-dependent mechanism (4). In addition, cycloheximide and Tumor Necrosis Factor possess a synergistic cytotoxicity (5,6), and consequently they are routinely used together to induce cell death. Investigators have demonstrated that cycloheximide blocks bortezomib-stimulated protein ubiquitination (7).

Limited Uses

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Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

For Research Use Only. Not for Use in Diagnostic Procedures.
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To Purchase # 2112
Cat. # Size Qty. Price
1 g