1. Metabolic Enzyme/Protease Anti-infection
  2. Endogenous Metabolite Bacterial
  3. (±)-Leucine

(±)-Leucine  (Synonyms: DL-Leucine; (RS)-Leucine)

Cat. No.: HY-B1674 Purity: 99.95%
COA Handling Instructions

(±)-Leucine (DL-Leucine), an isomer of Leucine, chemosterilant and dietary additive. (±)-Leucine inhibits growth of Escherichia coli HfrH by 92.08%.

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

(±)-Leucine Chemical Structure

(±)-Leucine Chemical Structure

CAS No. : 328-39-2

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

Customer Review

Based on 1 publication(s) in Google Scholar

Other Forms of (±)-Leucine:

Top Publications Citing Use of Products
  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review


(±)-Leucine (DL-Leucine), an isomer of Leucine, chemosterilant and dietary additive. (±)-Leucine inhibits growth of Escherichia coli HfrH by 92.08%[1].

In Vivo

(±)-Leucine (DL-Leucine) increases the average catch by increasing the quantity of pheromone or production frequency from the females[1].

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

Molecular Weight







White to off-white



Structure Classification

Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

1M HCl : 50 mg/mL (381.18 mM; ultrasonic and adjust pH to 1 with HCl)

H2O : 10 mg/mL (76.24 mM; Need ultrasonic)

DMSO : 1 mg/mL (7.62 mM; Need ultrasonic)

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 7.6237 mL 38.1185 mL 76.2369 mL
5 mM 1.5247 mL 7.6237 mL 15.2474 mL
10 mM 0.7624 mL 3.8118 mL 7.6237 mL
*Please refer to the solubility information to select the appropriate solvent.
Purity & Documentation

Purity: 99.95%

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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.

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