Description

4-Nitrophenylurea is a specialized organic compound featuring a nitro-substituted phenyl ring attached to a urea functional group. This structure makes it a valuable intermediate for synthesizing more complex molecules in fine chemical and pharmaceutical research. It is primarily sought after by R&D chemists and process development scientists working in agrochemical, pharmaceutical, and dyestuff industries. Its defined reactivity profile allows for precise chemical modifications in targeted synthesis pathways.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of potential drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Research: Used in the development and production of novel herbicides, pesticides, and plant growth regulators.
• Dyestuff and Pigment Manufacturing: Acts as a precursor in the creation of azo dyes and other complex colorants.
• Chemical Synthesis: Employed as a versatile reagent for introducing the nitrophenylurea moiety into larger molecular frameworks.
• Biochemical Research: May be utilized in the study of enzyme inhibitors or as a scaffold in medicinal chemistry.
• Material Science: Investigated for use in the synthesis of specialty polymers and advanced organic materials.

Basic Information

Product Name	4-Nitrophenylurea
CAS No.	556-10-5
Molecular Formula	C7H7N3O3
Molecular Weight	181.15 g/mol
Synonyms	1-(4-Nitrophenyl)urea; p-Nitrophenylurea; N-(4-Nitrophenyl)urea; Urea, (4-nitrophenyl)-; 4-Nitroanilinium isocyanate; (4-Nitrophenyl)carbamide; 4-Nitrocarbanilide
EINECS	209-122-0

Quality Control

Our 4-Nitrophenylurea is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity assessment and identity confirmation via FT-IR and melting point determination, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) detailing all specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its light-sensitive nature and tendency to be easily oxidized, it is recommended to store the material under an inert atmosphere for long-term preservation and to minimize exposure to air after opening.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Melting Point	Approx. 218-222 °C
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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