Description

Rifamycin L CAS NO 26117-02-2 is a key intermediate in the synthesis of the important antibiotic rifamycin S and its derivatives. This compound is valued for its role in producing semi-synthetic antibiotics with broad-spectrum activity against Gram-positive bacteria and mycobacteria. It is primarily required by pharmaceutical manufacturers and research institutions engaged in antibiotic development and production.

Application

• Pharmaceutical Intermediate: A critical precursor in the chemical synthesis of rifamycin S and other rifamycin-class antibiotics.
• Antibiotic Production: Used in the manufacturing process of semi-synthetic antibiotics for treating tuberculosis and other bacterial infections.
• Biochemical Research: Serves as a reference standard and starting material in studies of antibiotic mechanisms of action and resistance.
• Veterinary Medicine: Employed in the development of antimicrobial treatments for veterinary applications.

Basic Information

Product Name	Rifamycin L
CAS No.	26117-02-2
Molecular Formula	C37H45NO12
Molecular Weight	695.75 g/mol
Synonyms	Rifamycin L; Rifalazine; Antibiotic LM 427; Rifamycin L (8-Deoxy); (12Z,14E,24E)-(2S,12S,13S,14R,15S,16R,17S,18R,19S,20R,21S,22R,23S)-21-(Acetyloxy)-6,9,17,19-tetrahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-1,2-dihydro-2,7-(epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-5-yl acetate; Rifamycin L, 8-Deoxy-; LM 427
EINECS	Contact for details

Quality Control

Our Rifamycin L is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for pharmaceutical intermediates. Certificates of Analysis (COA) documenting all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). The product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 95.0%
Related Substances (HPLC)	Total impurities ≤ 5.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.