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Antibiotics and anti-infectives

Telithromycin

Also known as Ketek, Levviax, telithromycine

CAS 191114-48-4Formula C43H65N5O10Molar mass 812.02 g/molEC 682-750-4
GHS signal word: Danger. Pictograms: Corrosive, Serious health hazard, Hazardous to the environment 39 suppliers listed Drug substance
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Telithromycin chemical structure, C43H65N5O10, CAS 191114-48-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
191114-48-4
Formula
C43H65N5O10
Appearance
White to off-white crystalline powder
Melting point
187 to 188
HS code
293499
Category
Antibiotics and anti-infectives
Illustrative photo, off-white crystalline powder with an amber glass bottle on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Telithromycin?

Plain description, key identifiers and synonyms

Telithromycin is an amino sugar.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(1S,2R,5R,7R,8R,9R,11R,13R,14R)-8-[(2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-2-ethyl-9-methoxy-1,5,7,9,11,13-hexamethyl-15-[4-(4-pyridin-3-ylimidazol-1-yl)butyl]-3,17-dioxa-15-azabicyclo[12.3.0]heptadecane-4,6,12,16-tetrone
CAS number
191114-48-4 CAS number cross-checkedOther or deprecated CAS: 173838-31-8
EC number
682-750-4
Molecular formula
C43H65N5O10
UNII
KI8H7H19WL
MDL number
MFCD00943561
InChIKey
LJVAJPDWBABPEJ-PNUFFHFMSA-N
InChI
InChI=1S/C43H65N5O10/c1-12-33-43(8)37(48(41(53)58-43)19-14-13-18-47-23-31(45-24-47)30-16-15-17-44-22-30)27(4)34(49)25(2)21-42(7,54-11)38(28(5)35(50)29(6)39(52)56-33)57-40-36(51)32(46(9)10)20-26(3)55-40/h15-17,22-29,32-33,36-38,40,51H,12-14,18-21H2,1-11H3/t25-,26-,27+,28+,29-,32+,33-,36-,37-,38-,40+,42-,43-/m1/s1
Canonical SMILES
CCC1OC(=O)C(C)C(=O)C(C)C(OC2OC(C)CC(N(C)C)C2O)C(C)(OC)CC(C)C(=O)C(C)C2N(CCCCn3cnc(-c4cccnc4)c3)C(=O)OC12C
Isomeric SMILES
CC[C@@H]1[C@@]2([C@@H]([C@H](C(=O)[C@@H](C[C@@]([C@@H]([C@H](C(=O)[C@H](C(=O)O1)C)C)O[C@H]3[C@@H]([C@H](C[C@H](O3)C)N(C)C)O)(C)OC)C)C)N(C(=O)O2)CCCCN4C=C(N=C4)C5=CN=CC=C5)C

Synonyms

  • Ketek
  • Levviax
  • telithromycine
  • telitromicina
  • telithromycinum
  • HMR 3647
  • RU 66647
  • Telithromycin - 95%
  • Telithromycin (Ketek)?
  • Telithromycin (Standard)
  • HMR-3647, RU-66647

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
White to off-white crystalline powderexp.
Melting point
187 to 188exp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
812.02 g/molcalc.
Exact mass
811.4731 Dacalc.
LogP (octanol/water)
4.93calc.
Topological polar surface area
171.9 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
13calc.
Rotatable bonds
11calc.
Heavy atoms
58calc.
Rings
5calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.72calc.
Formal charge
0calc.
Stereocentres
13calc.
Lipinski rule of five
Fails (2 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1CC(=O)OCC2OC(=O)N(CCCCn3cnc(-c4cccnc4)c3)C2CC(=O)CCCC(OC2CCCCO2)C1

O=C1CC(=O)OCC2OC(=O)N(CCCCn3cnc(-c4cccnc4)c3)C2CC(=O)CCCC(OC2CCCCO2)C1

5 rings, 43 atoms.

3 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H318Causes serious eye damage.
  • H362May cause harm to breast-fed children.
  • H370Causes damage to organs.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (16)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P263Avoid contact during pregnancy and while nursing.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P308 + P316If exposed or concerned: Get emergency medical help immediately.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P391Collect spillage.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Telithromycin suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 39 suppliers
30 of 30 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

39 suppliers in 11 countries

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Telithromycin price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Antibacterial.

Pharmacological actions

  • Anti-Bacterial Agents

Pharmacology

Telithromycin is a Ketolide Antibacterial.

How it is made

Preperation: C. Agouridas et al., EP 680947, eidem, US 5635485 (1995, 1997 both to Roussel Uclaf)

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Telithromycin is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Telithromycin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Telithromycin, based on the data on this page

What is Telithromycin?

Telithromycin is an amino sugar.

What is the CAS number of Telithromycin?

The CAS registry number of Telithromycin is 191114-48-4. Other or deprecated CAS numbers: 173838-31-8.

What is the molecular formula and weight of Telithromycin?

The molecular formula of Telithromycin is C43H65N5O10 and its molar mass is 812.02 g/mol.

What is Telithromycin used for?

Antibacterial.

Is Telithromycin hazardous?

Telithromycin carries the GHS signal word "Danger". Main hazards: causes serious eye damage, may cause harm to breast-fed children, causes damage to organs. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Telithromycin?

Telithromycin is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Telithromycin?

CompoundList lists 39 suppliers of Telithromycin in United States, China, United Kingdom, Spain and 7 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Telithromycin in India?

1 supplier in India list Telithromycin on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Telithromycin?

Suppliers quote Telithromycin on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Telithromycin

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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