Catalog No.: A13257
Cysteine Protease inhibitor
E-64 is an irreversible and selective cysteine protease inhibitor with IC50 of 9 nM for papain.
Grouped product items
Product Name Price Stock Qty
E-64 25mg
In stock
E-64 50mg
In stock
E-64 100mg
In stock
E-64 10mM * 1mL in DMSO
In stock
Bulk Size
Bulk Discount
Free Delivery on orders over $500

Important Notice: For research use only. We do not sell to patients.

Not your Region? View all Distributors

Adooq Products cited in reputable paper
Biological Activity
Discription E-64 is an irreversible and selective cysteine protease inhibitor with IC50 of 9 nM for papain.
Target Value
Product Information
Catalog Num A13257
Formula C15H27N5O5
Molecular Weight 357.41
CAS Number 66701-25-5
Synonyms E64, E 64

Store lyophilized at -20ºC, keep desiccated.
In lyophilized form, the chemical is stable for 36 months.
In solution, store at -20ºC and use within 3 months to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.

In vitro DMSO Warmed: 61 mg/mL (170.67 mM)
Water Warmed: 9 mg/mL (25.18 mM)
Ethanol Insoluble
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Adooq tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Preparing Stock Solutions
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
0.1 mM 27.98 mL 139.9 mL 279.79 mL
0.5 mM 5.6 mL 27.98 mL 55.96 mL
1 mM 2.8 mL 13.99 mL 27.98 mL
5 mM 0.56 mL 2.8 mL 5.6 mL
Useful Calculator

This calculator helps you calculate mass of compound based on solution concentration, volume and molecular weight in a specific solution using the formula:

Mass (mg) = Concentration (mM) × Volume (mL) × Molecular Weight (g/mol)

  • Mass



    Molecular Weight

Please check COA/MSDS for correct molecular weight.

Calculate the dilution required to prepare a stock solution.
This equation is commonly abbreviated as: C1V1 = C2V2

  • C1




  • Calculator Reset
Keywords: buy E-64 | E-64 Supplier | purchase E-64 | E-64 cost | E-64 manufacturer | order E-64 | E-64 distributor | buy 66701-25-5 | 66701-25-5 Supplier | purchase 66701-25-5 | 66701-25-5 cost | 66701-25-5 manufacturer | order 66701-25-5 | 66701-25-5 distributor