1. Immunology/Inflammation
  2. Toll-like Receptor (TLR)

Leonurine hydrochloride (Synonyms: SCM-198 hydrochloride)

Cat. No.: HY-N0741A Purity: 99.32%
Handling Instructions

Leonurine (hydrochloride), a major alkaloid compound extracted from Leonurus japonicas Houtt. (Labiatae), is considered to have antitumor roles.

For research use only. We do not sell to patients.
Leonurine hydrochloride Chemical Structure

Leonurine hydrochloride Chemical Structure

CAS No. : 24735-18-0

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Free Sample (0.5-1 mg)   Apply now  
10 mM * 1 mL in DMSO USD 66 In-stock
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10 mg USD 90 In-stock
25 mg USD 160 In-stock
50 mg USD 360 In-stock
100 mg USD 590 In-stock
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Other Forms of Leonurine hydrochloride:

  • Biological Activity

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  • Technical Information

  • Purity & Documentation

  • References


Leonurine (hydrochloride), a major alkaloid compound extracted from Leonurus japonicas Houtt. (Labiatae), is considered to have antitumor roles.

In Vitro

Leonurine hydrochloride significantly inhibits the proliferation of H292 cells in a time- and dose-dependent manner, and induces G0/G1 cell-cycle arrest. Coincidentally, Leonurine hydrochloride treatment at a dose of 10, 25, and 50 μM for 24 h increases apoptotic ratio from 4.9±0.43% to 11.5±1.12%, 19.3±1.16%, and 61.3±6.69%, respectively. The inhibition effect of Leonurine hydrochloride on H292 cells is associated with the loss of MMP and the generation of ROS. The phosphorylation level of p38 is increased and Akt phosphorylation is reduced by Leonurine hydrochloride treatment. Furthermore, Leonurine hydrochloride treatment increases the expression levels of caspase-3, caspase-9 and Bax/Bcl-2[1]. In RAW 264.7 cells and mouse bone marrow monocytes (BMMs), Leonurine hydrochloride suppresses RANKL-induced osteoclastogenesis and actin ring formation in a dose-dependent manner. Leonurine hydrochloride targets RANKL-induced osteoclastogenesis and bone resorption at an early stage. Molecular analysis demonstrates that Leonurine hydrochloride attenuates RANKL-induced NF-κB signaling by inhibiting the phosphorylation and degradation of IκBα and NF-κB p65 nuclear translocation. Leonurine hydrochloride inhibits the RANK-TRAF6 association triggered by RANKL binding and the phosphatidylinositol 3-kinase (PI3K)/Akt axis, without significantly affecting the extracellular signal-regulated kinase (ERK)/mitogen-activated protein kinase (MAPK) and AP-1 signaling pathways. Leonurine hydrochloride attenuates the RANKL-stimulated expression of osteoclast-related genes including NFATc1, tartrate resistant acid phosphatase (TRAP), cathepsin K, and osteoclast-associated receptor (OSCAR)[2]. Leonurine hydrochloride significantly increases the [Ca2+]i, PLC activity, and relative production of PKC protein in myometrial cells[3].

In Vivo

In in vivo experiments, leonurine hydrochloride treatment elevates the ET level and ET/NO ratio in rats with induced abortions and up-regulated ETA mRNA expression, but there is no change in ETB mRNA[3]. In in vivo experiments, compared with the model group, Leonurine hydrochloride treatment markedly reduces the volume of bleeding and intrauterine residual, and significantly shortens the duration of bleeding. From the contraction curve, Leonurine hydrochloride notably reinforces the frequency and tension of uterine contractions. Leonurine hydrochloride remarkably elevates the serum estradiol level in rats, but has no obvious effect on progesterone level[4].

Molecular Weight








Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month

Room temperature in continental US; may vary elsewhere

Solvent & Solubility

DMSO: ≥ 31 mg/mL

* "<1 mg/mL" means slightly soluble or insoluble. "≥" means soluble, but saturation unknown.

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Leonurine hydrochloride
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