Pharm-Rx Neomycin Sulfate

Pharm-Rx Neomycin Sulfate, serves as an essential component of pharmaceuticals as an active ingredient (API). Owing to its varied pharmacological properties, which render it essential for a range of formulations and therapeutic applications, it finds extensive application in the pharmaceutical industry.

Chemical Name: Neomycin Sulfate

CAS Number: 1405-10-3

Chemical Inventories: AICS (Australia), DSL (Canada), ECL (Korea), EINECS (EU), IECSC (China), NZIoC (New Zealand), PICCS (Phillipines), TCSI (Taiwan), TSCA (USA)

Certifications & Compliance: California Proposition 65, DMF Type II, FDA 29 CFR 1910.1200

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Identification & Functionality

Chemical Name
Molecular formula
C₂₃H₄₈N₆O₁₇S, C₂₃H₄₆N₆O₁₃
Molecular Structure


Neomycin Sulfate is the sulfate salt of a kind of neomycin, an antibacterial substance produced by the growth of Streptomyces fradiae Waksman (Fam. Streptomycetaceae), or a mixture of two or more such salts, the main component being neomycin B sulfate. It has a potency equivalent to not less than 600 μg of neomycin/mg, calculated on the dried basis.

Chemical Structure

 - 1


Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Molecular Weight712.7--

Regulatory & Compliance

USP Reference Standards
  • USP Neomycin Sulfate RS USP Neomycin A RS 2-Deoxy-4-O-(2,6-diamino-2,6-dideoxy-α-D- glucopyranosyl)-D-streptamine (free base)
  • C12H26N4O 6 (free base) 322.36 (free base) USP Neomycin B RS USP Neomycin Sulfate System Suitability Mixture RS A mixture of neomycin B sulfate and neomycin C sulfate
  • (USP 1-Aug-2023)

Packaging & Availability

Labelling Information

Where it is intended for use in preparing injectable or other sterile dosage forms, the label states that it is sterile or must be subjected to further processing during the preparation of injectable or other sterile dosage forms. Change to read

Storage & Handling

Storage Information

Preserve in tight, light-resistant containers. Store at controlled room temperature. (USP 1-Aug-2023)