Description

Neoprontosil is a synthetic azo dye and sulfonamide derivative with significant historical and research importance in the field of medicinal chemistry. As a key compound in the development of early antibacterial agents, it holds substantial value for researchers and developers in the pharmaceutical and life sciences sectors. This product is primarily utilized in chemical synthesis, academic research, and as a reference standard for analytical and pharmacological studies.

Application

• Pharmaceutical Research & Development: Used as a key intermediate or reference compound in the synthesis and study of sulfonamide-based drugs and azo dyes.
• Chemical Synthesis: Serves as a versatile building block for creating more complex sulfonamide derivatives and azo compounds.
• Analytical Reference Standard: Employed in laboratories for method development, calibration, and quality control testing via HPLC, TLC, or spectroscopy.
• Academic & Historical Studies: Used in university and institutional research to study the history and mechanism of early antibacterial chemotherapy.
• Dye & Pigment Industry: Investigated for potential applications in specialized dyes due to its azo chromophore structure.

Basic Information

Product Name	Neoprontosil
CAS No.	132-38-7
Molecular Formula	C₁₂H₁₃N₅O₄S₂
Molecular Weight	355.40 g/mol
Synonyms	Azosulfamide; 4-[[2,4-Diaminophenyl)azo]benzenesulfonamide; Prontosil soluble; Streptozon S; Sulfamidochrysoidine; Rubiazol II; Dagenan; Prontosil II; Prontosil rubrum; Azo-sulfamide; NSC 66795
EINECS	205-058-6

Quality Control

Our Neoprontosil is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and reliability for research and industrial use. Each lot undergoes comprehensive analytical testing, including identification (IR, HPLC), purity assay, and impurity profiling. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting compliance with our stringent in-house specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, containers should be amber-colored or stored in dark conditions.

Specification

Item	Specification
Appearance	Reddish-brown to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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