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R(+)-Baclofen hydrochloride


Arbaclofen hydrochloride, R(+)-β-(Aminomethyl)-4-chlorobenzenepropanoic acid hydrochloride, STX209
Empirical Formula (Hill Notation):
C10H12ClNO2 · HCl
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level



optical activity

[α]28/D +3.8°, c = 0.9 in methanol(lit.)




DMSO: >20 mg/mL
H2O: 26 mg/mL (Solutions may be stored for several weeks at 4 °C.)

SMILES string




InChI key


Gene Information

human ... GABBR1(2550)
mouse ... GABBR1(54393)
rat ... GABBR1(81657)


25, 100, 500 mg in glass bottle

Biochem/physiol Actions

R(+)-Baclofen is a GABAB receptor agonist; more active enantiomer; skeletal muscle relaxant.

Other Notes

Same enantiomer as R(−)-baclofen free base.

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

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More Documents

Quotes and Ordering

Yuriko Watanabe et al.
European journal of pharmacology, 837, 88-95 (2018-08-08)
The nucleus accumbens contains delta-opioid receptors that may decrease inhibitory neurotransmission. As GABAB receptors inhibit dopamine release, decrease in activation of GABAB receptors may be a mediator of delta-opioid receptor-induced accumbal dopamine efflux. If so, accumbal dopamine efflux induced by
Reagan L Pennock et al.
The Journal of physiology, 592(19), 4247-4256 (2014-08-03)
It has recently been shown that dynorphin A (Dyn A), an endogenous agonist of the κ-opioid receptor (KOR), directly inhibits proopiomelanocortin (POMC) neurons in the hypothalamus through activation of G-protein-coupled inwardly rectifying K(+) channels (GIRKs). This effect has been proposed
Ya-Qun Zhou et al.
The journal of pain, 18(8), 933-946 (2017-03-23)
Cancer-induced bone pain (CIBP) remains a major challenge in advanced cancer patients because of our lack of understanding of its mechanisms. Previous studies have shown the vital role of γ-aminobutyric acid B receptors (GABABRs) in regulating nociception and various neuropathic
Xia Li et al.
Neuropharmacology, 97, 357-364 (2015-05-24)
GABAB (γ-aminobutyric acid B) receptors may be a therapeutic target for anxiety disorders. Here we characterized the effects of the GABAB receptor positive allosteric modulator (PAM) BHF177 on conditioned and unconditioned physiological responses to threat in the light-enhanced startle (LES)
Toshihiko Kinjo et al.
Neurochemical research, 43(1), 70-79 (2017-06-14)
Mitochondrial permeability transition pore (PTP) is supposed to at least in part participate in molecular mechanisms underlying the neurotoxicity seen after overactivation of N-methyl-D-aspartate (NMDA) receptor (NMDAR) in neurons. In this study, we have evaluated whether activation of GABA


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