Erythromycin
C37H67NO13
733.94
Erythromycin;
(3R*,4S*,5S*,6R*,7R*,9R*,11R*,12R*,13S*,14R*)-4-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-α-l-ribo-hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)-β-d-xylo-hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione [114-07-8]
Erythromycin;
(3R*,4S*,5S*,6R*,7R*,9R*,11R*,12R*,13S*,14R*)-4-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-α-l-ribo-hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)-β-d-xylo-hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione [114-07-8]
DEFINITION
Erythromycin consists primarily of erythromycin A (C37H67NO13). The sum of the percentages of erythromycin A, erythromycin B, and erythromycin C is NLT 85.0% and NMT 100.5%, calculated on the anhydrous basis.
USP REFERENCE STANDARDS FOR PURCHASE
USP Erythromycin RSUSP Erythromycin B RS
USP Erythromycin C RS
USP Erythromycin Related Compound N RS