Description

1H-Pyrazol-3-Ol,5-Methyl-4-Nitroso-(9Ci) is a specialized heterocyclic organic compound featuring a nitroso functional group on a pyrazole core. This unique structure makes it a valuable intermediate for synthesizing more complex molecules in advanced research and development. It is primarily utilized by chemical manufacturers and R&D laboratories in the pharmaceutical and agrochemical sectors. The compound is supplied with a guaranteed Certificate of Analysis to ensure batch-to-batch consistency and reliability for critical applications.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting specific enzyme pathways.
• Agrochemical Research: Serves as a precursor in the development of new herbicides, fungicides, and plant growth regulators.
• Chemical Synthesis: Used as a versatile nitroso-transfer reagent or a functionalized heterocycle in complex organic synthesis and material science.
• Dye & Pigment Manufacturing: Acts as an intermediate in the production of specialized azo dyes and colorants.
• Academic & Industrial R&D: Employed in research programs focused on heterocyclic chemistry, medicinal chemistry, and process development.

Basic Information

Product Name	1H-Pyrazol-3-Ol,5-Methyl-4-Nitroso-(9Ci)
CAS No.	147738-81-6
Molecular Formula	C4H5N3O2
Molecular Weight	127.10 g/mol
Synonyms	5-Methyl-4-nitroso-1H-pyrazol-3-ol; 4-Nitroso-5-methyl-1H-pyrazol-3-ol; 3-Hydroxy-5-methyl-4-nitrosopyrazole; 5-Methyl-4-nitrosopyrazol-3-ol; 4-Nitroso-5-methylpyrazol-3-ol; 1H-Pyrazol-3-ol, 5-methyl-4-nitroso-; 5-Methyl-4-nitroso-3-pyrazolol
EINECS	Contact for details

Quality Control

Every batch of 1H-Pyrazol-3-Ol,5-Methyl-4-Nitroso-(9Ci) is produced and tested under a strict quality management system. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	Yellow to orange powder or crystals
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
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.