Title: Tylosin
CAS Registry Number: 1401-69-0
Trademarks: Tylan (Elanco)
Molecular Formula: C46H77NO17
Molecular Weight: 916.10
Percent Composition: C 60.31%, H 8.47%, N 1.53%, O 29.69%
Literature References: Macrolide antibiotic isolated from a strain of Streptomycetes fradiae found in soil from Thailand: Hamill et al., Antibiot. Chemother. 11, 328 (1961); eidem, US 3178341 (1965 to Lilly). Prodn in batch and chemostat cultures: P. P. Gray, S. Bhuwapathanapun, Biotechnol. Bioeng. 22, 1785 (1980). Partial structure: Morin, Gorman, Tetrahedron Lett. 1964, 2339. Structure: Morin et al., ibid. 1970, 4737; Achenbach et al., Ber. 108, 2481 (1975). Configurational study: S. Omura et al., Tetrahedron Lett. 1977, 1045. Abs config: eidem, J. Antibiot. 33, 915 (1980); N. D. Jones et al., ibid. 35, 420 (1982). Synthesis of tylonolide, the aglycone: S. Masamune et al., J. Am. Chem. Soc. 98, 7874 (1976); K. Tatsuta et al., Tetrahedron Lett. 22, 3997 (1981). Relationship of ribosomal binding and antibacterial properties: J. W. Corcoran et al., J. Antibiot. 30, 1012 (1977). Biosynthesis studies: E. T. Seno et al., Antimicrob. Agents Chemother. 11, 455 (1977); S. Omura et al., J. Antibiot. 31, 254 (1978).
Properties: Crystals from water, mp 128-132°. [a]D25 -46° (c = 2 in methanol). uv max: 282 nm (E1%1cm 245). Soly in water at 25°: 5 mg/ml. Sol in lower alcohols, esters and ketones, in chlorinated hydrocarbons, benzene, ether. Solns are stable at pH 4-9; at pH <4 another active compd, desmycosin is formed.
Melting point: mp 128-132°
Optical Rotation: [a]D25 -46° (c = 2 in methanol)
Absorption maximum: uv max: 282 nm (E1%1cm 245)
Derivative Type: Hydrochloride
Molecular Formula: C46H77NO17.HCl
Molecular Weight: 952.56
Percent Composition: C 58.00%, H 8.25%, N 1.47%, O 28.55%, Cl 3.72%
Properties: Crystals from ethanol + ether, mp 141-145°.
Melting point: mp 141-145°
Therap-Cat-Vet: Antibacterial.
Tyloxapol Tymazoline Tyramine Tyrocidine Tyropanoate Sodium

Tylosin structure.png
Systematic (IUPAC) name
[(2R,3R,4E,6E,9R,11R,12S,13S,14R) -12- {[3,6-dideoxy-4-O-(2,6-dideoxy-3-C-methyl-α-L-ribo-hexopyranosyl) -3- (dimethylamino)-β-D-glucopyranosyl]oxy}-2-ethyl-14-hydroxy-5, 9,13-trimethyl-8, 16-dioxo-11-(2-oxoethyl)oxacyclohexadeca-4,6-dien-3-yl]methyl 6-deoxy-2,3-di-O-methyl-β-D-allopyranoside
Clinical data
AHFS/Drugs.com International Drug Names
Legal status  ?
CAS number 1401-69-0 YesY
ATCvet code QJ01FA90 QJ51FA90
PubChem CID 5280440
ChemSpider 4444097 N
KEGG D02490 YesY
Chemical data
Formula C46H77NO17 
Mol. mass 916.10 g/mol
 N (what is this?)  (verify)

Tylosin is a bacteriostat food additive used in veterinary medicine. It has a broad spectrum of activity against gram-positive organisms and a limited range of gram-negative organisms.[1] It is found naturally as a fermentation product of Streptomyces fradiae.[2]

Tylosin is used in veterinary medicine to treat bacterial infections in a wide range of species and has a high margin of safety.[3] It has also been used as a growth promotant in some species, and as a treatment for colitis in companion animals.[2]