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Morphine sulfate salt pentahydrate

Morphine hemi[sulfate pentahydrate]
Empirical Formula (Hill Notation):
C34H40N2O10S · 5H2O
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level

drug control

USDEA Schedule II; Home Office Schedule 2; stupéfiant (France); kontrollierte Droge in Deutschland; regulated under CDSA - not available from Sigma-Aldrich Canada; estupefaciente (Spain); Decreto Lei 15/93: Tabela IA (Portugal)


ethanol: 1.8 mg/mL
H2O: 64 mg/mL



SMILES string




InChI key


Gene Information

human ... OPRM1(4988)

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Biochem/physiol Actions

Narcotic analgesic; prototypic μ opioid receptor agonist; also agonist at κ opioid receptors.

Features and Benefits

This compound is featured on the Opioid Receptors page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.
This compound was developed by Baxter. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.


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Signal Word


Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - STOT SE 3

Target Organs

Central nervous system

Storage Class Code

11 - 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

Certificate of Origin

L Stanasila et al.
Journal of neurochemistry, 75(3), 1190-1199 (2000-08-11)
Two constructs encoding the human micro-opioid receptor (hMOR) fused at its C terminus to either one of two Galpha subunits, Galpha(o1) (hMOR-Galpha(o1)) and Galpha(i2) (hMOR-Galpha(i2)), were expressed in Escherichia coli at levels suitable for pharmacological studies (0.4-0.5 pmol/mg). Receptors fused...
S Katsumata et al.
European journal of pharmacology, 291(3), 367-373 (1995-11-30)
We investigated the binding characteristics of dihydroetorphine, 7,8-dihydro-7 alpha-[1-(R)-hydroxy-1-methylbutyl]-6, 14-endoethanotetrahydro-oripavine, and its effect on the inhibitory system of cyclic AMP production using cloned mu-, delta- and kappa-opioid receptors expressed on Chinese hamster ovary cells. The Ki values of dihydroetorphine for...
G Martin et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 19(20), 9081-9089 (1999-10-12)
In a study of a possible substrate underlying morphine addiction, we examined NMDA receptor-mediated synaptic transmission of core nucleus accumbens neurons after chronic morphine treatment, using intracellular recording in a slice preparation of rat. We evoked pharmacologically isolated NMDA EPSCs...
Stuti Agarwal et al.
American journal of physiology. Lung cellular and molecular physiology, 318(5), L1097-L1108 (2020-04-03)
We previously demonstrated that the combined exposure of human pulmonary microvascular endothelial cells (HPMECs) to morphine and viral protein(s) results in the oxidative stress-mediated induction of autophagy, leading to shift in the cells from early apoptotic to apoptosis-resistant proliferative status...
Shilong Yang et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(43), 17534-17539 (2013-10-02)
Loss-of-function mutations in the human voltage-gated sodium channel NaV1.7 result in a congenital indifference to pain. Selective inhibitors of NaV1.7 are therefore likely to be powerful analgesics for treating a broad range of pain conditions. Herein we describe the identification...

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