NEOMYCIN B

Synonym(s):(2-Deoxy-4-O-(2,6-diamino-2,6-dideoxy-a-D-glucopyranosyl)-5-O-[3-O-(2,6-diamino-2,6-dideoxy-b-L-idopyranosyl)-b-D-ribofuranosyl]-D-streptamine sulfate);Antibiotic 10676;Neomycin B

CAS NO.：119-04-0
Empirical Formula: C23H46N6O13
Molecular Weight: 614.64
MDL number: MFCD09788228
EINECS: 204-292-2
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:27:03

What is NEOMYCIN B?

The Uses of NEOMYCIN B

Neomycin C is an aminoglycoside antibiotic found in many topical medications. Neomycin has been used as a preventive measure for hepatic encephalopathy and hypercholesterolemia.

What are the applications of Application

Neomycin solution is a filtered reagent suitable for cell culture

Background

A component of neomycin that is produced by Streptomyces fradiae. On hydrolysis it yields neamine and neobiosamine B. (From Merck Index, 11th ed)

Indications

For the treatment of bacterial blepharitis, bacterial bonjunctivitis, corneal injuries, corneal ulcers and meibomianitis. For the prophylaxis of ocular infections following foreign body removal

Definition

ChEBI: A tetracyclic antibacterial agent derived from neomycin, being a glycoside ester of neamine and neobiosamine B.

General Description

Chemical structure: aminoglycoside

Biochem/physiol Actions

Neomycin is an aminoglycoside antibiotic, produced by Streptomyces containing a minimum of 85% neomycin B. It acts as a selection agent for prokaryotic cells transformed using the neo selectable marker gene. Neomycin trisulfate is used to study the cytototoxic side effects of antibiotics, platelet-derived growth factor responses in certain fibroblasts and extraction of nuclear phosphatidylinositol 4,5-bisphosphate-interacting proteins. This product is recommended for use in cell culture applications at 5 mL/L.Mode of action: This product acts by binding to the 30S and 50S subunits, causing miscoding and inhibiting initiation and elongation during protein synthesis. Neomycin also blocks voltage-sensitive Ca2+ channels without affecting the Na+/Ca2+ antiporter in neurons.Antimicrobial spectrum: Neomycin acts against both gram-positive and gram-negative bacteria

Pharmacokinetics

Framycetin is used for the treatment of bacterial eye infections such as conjunctivitis. Framycetin is an antibiotic. It is not active against fungi, viruses and most kinds of anaerobic bacteria. Framycetin works by binding to the bacterial 30S ribosomal subunit, causing misreading of t-RNA, leaving the bacterium unable to synthesize proteins vital to its growth. Framycetin is useful primarily in infections involving aerobic bacteria bacteria.

Metabolism

Not Available

Properties of NEOMYCIN B

Melting point:	>194°C (dec.)
Boiling point:	658.4°C (rough estimate)
Density	1.3548 (rough estimate)
refractive index	1.6000 (estimate)
storage temp.	2-8°C
solubility	Aqueous Acid (Slightly), Water (Slightly)
form	liquid
pka	12.93±0.70(Predicted)
color	clear
Merck	13,6482
Stability:	Hygroscopic

Safety information for NEOMYCIN B

Signal word	Danger
Pictogram(s)	Health Hazard GHS08
GHS Hazard Statements	H317:Sensitisation, Skin H334:Sensitisation, respiratory
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P284:Wear respiratory protection. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P333+P313:IF SKIN irritation or rash occurs: Get medical advice/attention. P342+P311:IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician.