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M150

Sigma-Aldrich

S(+)-Methadone hydrochloride

solid

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About This Item

Empirical Formula (Hill Notation):
C21H27NO · HCl
CAS Number:
5653-80-5
Molecular Weight:
345.91
MDL number:
MFCD00151717
UNSPSC Code:
12352200

form

solid

drug control

USDEA Schedule II; Home Office Schedule 2; stupéfiant (France); kontrollierte Droge in Deutschland; regulated under CDSA - not available from Sigma-Aldrich Canada

color

white

solubility

H2O: soluble

Other Notes

Enantiomer of methadone that is either inactive or a weak agonist at opioid receptors; NMDA antagonist that blocks the development of morphine tolerance.

Pictograms

Skull and crossbonesHealth hazard
GHS06,GHS08

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Oral - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

Storage Class Code

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
113K47141
113K4714

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A M Davis et al.
The Journal of pharmacology and experimental therapeutics, 289(2), 1048-1053 (1999-04-24)
Previous in vitro and in vivo studies have determined that the d isomer of methadone has N-methyl-D-aspartate (NMDA) receptor antagonist activity. The present studies examined the ability of d-methadone to attenuate the development of morphine tolerance in mice and rats
A L Gorman et al.
Neuroscience letters, 223(1), 5-8 (1997-02-14)
Racemic (dl)-methadone has antagonist activity at the N-methyl-D-aspartate (NMDA) receptor. We evaluated dl-methadone, the opioid active (l-) and the opioid inactive (d-) isomers in competition binding assays. dl-Methadone and its d- and l- isomers exhibited low micromolar affinities for the
K Kristensen et al.
Life sciences, 56(2), PL45-PL50 (1995-01-01)
The binding affinities of racemic methadone and its optical isomers R-methadone and S-methadone were evaluated for the opioid receptors mu1, mu2, delta and kappa, in comparison with that of morphine. The analgesic R-methadone had a 10-fold higher affinity for mu1

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