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Merck
CN

T8200

Tofisopam

≥98% (HPLC), solid

Synonym(s):

7,8-Dimethoxy-1-(3,4-dimethoxyphenyl)-5-ethyl-4-methyl-5H-2,3-benzodiazepine, EGYT 341, Seriel

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About This Item

Empirical Formula (Hill Notation):
C22H26N2O4
CAS Number:
22345-47-7
Molecular Weight:
382.45
NACRES:
NA.77
PubChem Substance ID:
24724636
UNSPSC Code:
12352200
EC Number:
244-922-3
MDL number:
MFCD00823171

Key Documents

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Product Name

Tofisopam, ≥98% (HPLC), solid

InChI

1S/C22H26N2O4/c1-7-15-13(2)23-24-22(14-8-9-18(25-3)19(10-14)26-4)17-12-21(28-6)20(27-5)11-16(15)17/h8-12,15H,7H2,1-6H3

InChI key

RUJBDQSFYCKFAA-UHFFFAOYSA-N

SMILES string

CCC1C(C)=NN=C(c2ccc(OC)c(OC)c2)c3cc(OC)c(OC)cc13

assay

≥98% (HPLC)

form

solid

drug control

regulated under CDSA - not available from Sigma-Aldrich Canada

color

white

solubility

DMSO: ~14 mg/mL
H2O: insoluble

Quality Level

100

Application

Tofisopam has been used for studying its biochemical mechanisms of actions using drug repositioning strategies.

Biochem/physiol Actions

Ligand for the GABAA receptor benzodiazepine modulatory site.
Studies have reported that tofisopam functions by blocking PDE4 (phosphodiesterase 4). Furthermore, the S-enantiomer of tofisopam is considered ten times more active than R-enantiomer.

Preparation Note

Tofisopam is soluble in DMSO at approximately 14 mg/ml. However, it is insoluble in water.

pictograms

Exclamation markEnvironment
GHS07,GHS09

signalword

Warning

hcodes

H302,H400

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1

Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
0000414970
0000414970
0000105557
0000105555
0000103849

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N Bonnet et al.
Toxicology and applied pharmacology, 221(1), 111-118 (2007-03-27)
The aim of this study was to evaluate the effects of various drugs which present antidepressant properties: selective serotonin-reuptake inhibitors (SSRIs, fluoxetine), serotonin and noradrenaline-reuptake inhibitors (Desipramine) and phosphodiesterase inhibitors (PDE, rolipram and tofisopam) on bone microarchitecture and biomechanical properties.
Michael D Cameron et al.
Drug metabolism and disposition: the biological fate of chemicals, 35(10), 1894-1902 (2007-07-25)
In vitro studies were conducted to elucidate the metabolic profiles of and the enzymes responsible for the metabolism of (R)- and (S)-tofisopam (1-(3,4-dimethoxyphenyl)-5-ethyl-7,8-dimethoxy-4-methyl-5H-2,3-benzodiazepine). Large differences were observed between the two enantiomers. The major metabolite in incubations of 500 ng/ml (approximately
Soo Kyoung Baek et al.
Biomedical chromatography : BMC, 16(4), 277-281 (2002-04-05)
A rapid and sensitive column-switching semi-micro HPLC method is described for the direct analysis of tofisopam in human serum. The sample (100 microL) was directly injected onto the precolumn (Capcell Pak MF Ph-1), where unretained proteins were eluted to waste.
N P Vanchakova et al.
Bulletin of experimental biology and medicine, 148(2), 343-345 (2009-12-23)
The study demonstrated high anxiolytic activity of tenoten, which was not inferior to the anxiolytic effect of grandaxin. The positive changes persisted after termination of treatment in the tenoten group (but not in grandaxin group). Tenoten can be recommended for
Drug repositioning: identifying and developing new uses for existing drugs.
Ted T Ashburn et al.
Nature reviews. Drug discovery, 3(8), 673-683 (2004-08-03)
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