CA 074

Pricing Availability Delivery Time Qty
Cat.No. 4863 - CA 074 | C18H29N3O6 | CAS No. 134448-10-5
Description: Selective cathepsin B inhibitor
Chemical Name: N-[[(2S,3S)-3-[(Propylamino)carbonyl]-2-oxiranyl]carbonyl]-L-isoleucyl-L-proline
Purity: ≥98% (HPLC)

Biological Activity

Inhibitor of cathepsin B (Ki = 2-5 nM). Displays selectivity over cathepsins H and L (Ki = 40-200 μM). Shown to reduce bone metastasis in a 4T1.2 breast cancer model.

Technical Data

M. Wt 383.44
Formula C18H29N3O6
Storage Store at -20°C
Purity ≥98% (HPLC)
CAS Number 134448-10-5
PubChem ID 9821383
Smiles O=[C@](NCCC)[C@H]1O[C@@H]1[C@@](N[C@@H]([C@@H](C)CC)[C@](N2[C@H](C(O)=O)CCC2)=O)=O

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

All Tocris products are intended for laboratory research use only.

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
DMSO 7.67 20
ethanol 7.67 20

Preparing Stock Solutions

The following data is based on the product molecular weight 383.44. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 2.61 mL 13.04 mL 26.08 mL
5 mM 0.52 mL 2.61 mL 5.22 mL
10 mM 0.26 mL 1.3 mL 2.61 mL
50 mM 0.05 mL 0.26 mL 0.52 mL

Molarity Calculator

Calculate the mass, volume, or concentration required for a solution.

*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Dilution Calculator

Calculate the dilution required to prepare a stock solution.

Product Datasheets

Certificate of Analysis / Product Datasheet
Select another batch:
Safety Datasheet


References are publications that support the products' biological activity.

Gillet et al (2009) Voltage-gated sodium channel activity promotes cysteine cathepsin-dependent invasiveness and colony growth of human cancer cells. J.Biol.Chem. 284 8680 PMID: 19176528

Towatari et al (1991) Novel epoxysuccinyl peptides. A selective inhibitor of cathepsin B, in vivo. FEBS Lett. 280 311 PMID: 2013329

Withana et al (2012) Cathepsin B inhibition limits bone metastasis in breast cancer. Cancer Res. 72 1199 PMID: 22266111

If you know of a relevant reference for CA 074, please let us know.

View Related Products by Product Action

View all Cathepsin Inhibitors

Keywords: CA 074, supplier, CA074, cathepsin, B, selective, inhibitors, inhibits, cysteine, proteases, Cathepsin, Calcium-Sensitive, Proteases, Cathepsin, Tocris Bioscience

Citations for CA 074

Citations are publications that use Tocris products.

Currently there are no citations for CA 074. Do you know of a great paper that uses CA 074 from Tocris? If so please let us know.

Commented out for usability testing


TODO: Add Reviews

Literature in this Area

New Product Guide

New Product Guide (Spring/Summer 2017)

Our new product guide highlights over 130 new products added to the Tocris Bioscience range during the first half of 2017.

  • 7-TM Receptors
  • Enzymes
  • Enzyme-Linked Receptors
  • Ion Channels
  • Nuclear Receptors
  • Transporters
  • Apoptosis
  • Cell Metabolism
  • Epigenetics
  • Fluorescent Imaging
  • Signal Transduction
  • Stem Cells

Pathways for CA 074


TODO: Add Protocols