1. Apoptosis
  2. Caspase
  3. Ac-LEHD-AFC


Cat. No.: HY-P1093
Handling Instructions

Ac-LEHD-AFC is a fluorescent substrate for caspase-9, can be used to assess the activity of caspase.

For research use only. We do not sell to patients.

Ac-LEHD-AFC Chemical Structure

Ac-LEHD-AFC Chemical Structure

CAS No. : 210345-03-2

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This product is a controlled substance and not for sale in your territory.

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Ac-LEHD-AFC is a fluorescent substrate for caspase-9, can be used to assess the activity of caspase[1].

IC50 & Target


In Vitro

Guidelines (Following is our recommended protocol. This protocol only provides a guideline, and should be modified according to your specific needs).
The assessment of the caspase activity by fluorogenic substrate assay[1]:
1. Preparation of cell lysis buffer: 1 % Nonidet P-40, NaCl 200 mM, Tris/HCl 20 mM, pH 7.4, Leupeptin 10 mg/L, Aprotinin (HY-P0017) (0.27 kU/L) and 100 mM PMSF (HY-B0496) .
2. Incubate the lysis buffer (25 mg of total protein) with 50 mmol/L of AC-DEVD-AMC (HY-P1003) (caspase-3), AC-VEID-AFC (caspase-8) or AC-LEHD-AFC (caspase-9) in the buffer (HEPES 10 mM, pH 7.4, containing Mannitol 220 mM, Sucrose 68 mM, NaCl 2 mM, KH2PO4 2.5 mM, EGTA 0.5 mM, MgCl2 2 mM, Pyruvate 5 mM, PMSF 0.1 mM, and Dithiothreitol 1 mM).
3. Assess the caspase activity by measuring fluorescent 7-amino-4-methylcoumarin released for 1 h at a 2-min intervals by a spectrofluorometer.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight




Emission (Em)


Excitation (Ex)





Room temperature in continental US; may vary elsewhere.


Please store the product under the recommended conditions in the Certificate of Analysis.

Purity & Documentation
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Ac-LEHD-AFC Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

  • Molarity Calculator

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The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass   Concentration   Volume   Molecular Weight *
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The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

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