Laudexium metilsulfate

Laudexium metilsulfate

Clinical data
Routes of administration	IV
Legal status
Legal status	discontinued from clinical use
Pharmacokinetic data
Bioavailability	100% (IV)
Identifiers
IUPAC name 1-[(3,4-Dimethoxyphenyl)methyl]-2-[10-[1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-2-methyl-3,4-dihydro-1H-isoquinolin-2-ium-2-yl]decyl]-6,7-dimethoxy-2-methyl-3,4-dihydro-1H-isoquinolin-2-ium methyl sulfate
Synonyms	Laudolissin
CAS Number	3253-60-9
PubChem (CID)	18618
ChemSpider	17584
UNII	D067KDG4NU
Chemical and physical data
Formula	C54H80N2O16S2
Molar mass	1077.35 g/mol
3D model (Jmol)	Interactive image
SMILES C[N+]1(CCC2=CC(=C(C=C2C1CC3=CC(=C(C=C3)OC)OC)OC)OC)CCCCCCCCCC[N+]4(CCC5=CC(=C(C=C5C4CC6=CC(=C(C=C6)OC)OC)OC)OC)C.COS(=O)(=O)[O-].COS(=O)(=O)[O-]
InChI InChI=1S/C52H74N2O8.2CH4O4S/c1-53(27-23-39-33-49(59-7)51(61-9)35-41(39)43(53)29-37-19-21-45(55-3)47(31-37)57-5)25-17-15-13-11-12-14-16-18-26-54(2)28-24-40-34-50(60-8)52(62-10)36-42(40)44(54)30-38-20-22-46(56-4)48(32-38)58-6;2*1-5-6(2,3)4/h19-22,31-36,43-44H,11-18,23-30H2,1-10H3;2*1H3,(H,2,3,4)/q+2;;/p-2 Key:LADQAYSLFLCKOD-UHFFFAOYSA-L
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Laudexium metilsulfate is a neuromuscular blocking drug or skeletal muscle relaxant in the category of non-depolarizing neuromuscular-blocking drugs, used adjunctively in surgical anesthesia to facilitate endotracheal intubation and to provide skeletal muscle relaxation during surgery or mechanical ventilation.

Laudexium^[1] is no longer used in clinical practice, though it was introduced clinically in the early 1950s. It has about half the potency, a slower onset of action and a duration of action much longer than that of d-tubocurarine.^[2] As with all clinically established (as well as experimental agents) with a non-depolarizing mechanism of action, its pharmacological action can be antagonized by anticholinesterases.

The displacement of laudexium from clinical use was assured owing to recurrent reports of significant post-operative re-curarization.^[3]

References

1. Taylor EP (1952). "Synthetic neuromuscular blocking agents. Part II. Bis(quaternary ammonium salts) derived from laudanosine". J Chem Soc: 142–145. doi:10.1039/JR9520000142.
2. Hunter AR (1955). "The action of laudexium in man and experimental animals". Br J Anaesth. 27 (2): 73–79. doi:10.1093/bja/27.2.73. PMID 13230365.
3. Collier HO, Macauley B (1952). "The pharmacological properties of "laudolissin" a long-acting curarizing agent". Br J Pharmacol Chemother. 7 (3): 398–408. doi:10.1111/j.1476-5381.1952.tb00707.x. PMC 1509112. PMID 12978243.

External links

• Neuromuscular blocking agents at the US National Library of Medicine Medical Subject Headings (MeSH)