Technical Data
EM574 (Motilide, Idremcinal, 8,9-Didehydro-N-demethyl-9-deoxo-6-deoxy-6,9-epoxy-N-(1-methylethyl)-erythromycin)
Biochemicals Storage: 4C/-20CShipping: Blue Ice
Shows strong gastrointestinal motor stimulating (GMS) activity. Motilin receptor agonist. Stimulates smooth muscle cell contraction. Stimulates cholinergic neurons in a non-vagal pathway. Enhances gastrointestinal contractile activity and accelerates gastric emptying. Shows orexigenic activity with affinity for the growth-hormone secretagogue receptor (GHS-R, ghrelin receptor).

Storage and Stability:
Short-term Storage: +4C
Long-term Storage: -20C
Stable for at least 3 years after receipt when stored at -20C.

CAS Number:

Molecular Formula:

Molecular Weight:
Purity: >97% (HPLC)

Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
Product Reference:
Gastrointestinal motor-stimulating activity of macrolide antibiotics and the structure-activity relationship: S. Omura, et al.; J. Antibiot. (Tokyo) 38, 1631 (1985)
Macrolides with gastrointestinal motor stimulating activity: S. Omura, et al.; J. Med. Chem. 30, 1941 (1987)
EM574, an erythromycin derivative, is a potent motilin receptor agonist in human gastric antrum: M. Satoh, et al.; J. Pharmacol. Exp. Ther. 271, 574 (1994)
Vagus-dependent and vagus-independent mechanisms of action of the erythromycin derivative EM574 and motilin in dogs: N. Inatomi, et al.; Jpn. J. Pharmacol. 71, 29 (1996)
Bioactive metabolites of EM574 and EM523, erythromycin derivatives having strong gastrointestinal motor stimulating activity: Y. Funabashi, et al.; J. Antibiot. (Tokyo) 49, 794 (1996)
EM574, an erythromycin derivative, is a motilin receptor agonist in the rabbit: F. Sato, et al.; Eur. J. Pharmacol. 322, 63 (1997)
Effects of EM574 and cisapride on gastric contractile and emptying activity in normal and drug-induced gastroparesis in dogs: T. Tanaka, et al.; J. Pharmacol. Exp. Ther. 287, 712 (1998)
Effect of EM574 on postprandial pancreaticobiliary secretion, gastric motor activity, and emptying in conscious dogs: T. Tanaka, et al.; Dig. Dis. Sci. 44, 1100 (1999)
EM574, a motilide, has an orexigenic activity with affinity for growth-hormone secretagogue receptor: A. Asakawa, et al.; J. Gastroenterol. Hepatol. 18, 881 (2003)

Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.