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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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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
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
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

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