Description

1H-Pyrazol-5-Ol, 3-Methyl-1-Phenyl-, Hydrogen Sulfate (Ester) is a specialized organic chemical building block and intermediate of significant interest in advanced synthesis. Its value lies in its functionalized pyrazole core, which serves as a versatile precursor for the development of active pharmaceutical ingredients (APIs) and high-performance agrochemicals. This compound is essential for R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries seeking to create novel heterocyclic compounds.

Application

• Pharmaceutical Intermediate: A key synthetic precursor in the research and production of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, inflammation, and metabolic diseases.
• Agrochemical Synthesis: Used in the manufacture of advanced pesticides, herbicides, and fungicides, where the pyrazole moiety contributes to biological activity.
• Fine Chemical Production: Serves as a building block for creating complex molecules used in materials science, dyes, and specialty polymers.
• Research & Development: Employed in academic and industrial laboratories for method development and exploring new chemical entities in medicinal chemistry.
• Chemical Reference Standard: Utilized as an analytical standard for quality control and regulatory testing in manufacturing processes.

Basic Information

Product Name	1H-Pyrazol-5-Ol, 3-Methyl-1-Phenyl-, Hydrogen Sulfate (Ester)
CAS No.	76407-98-2
Molecular Formula	C10H10N2O4S
Molecular Weight	254.26 g/mol
Synonyms	3-Methyl-1-phenyl-1H-pyrazol-5-yl hydrogen sulfate; 3-Methyl-1-phenyl-1H-pyrazol-5-ol sulfate; 1-Phenyl-3-methyl-5-pyrazolyl sulfate; 5-Hydroxy-3-methyl-1-phenylpyrazole sulfate ester; PMS (Pyrazole Methyl Sulfate); Phenylmethylpyrazolyl sulfate
EINECS	Contact for details

Quality Control

Our 1H-Pyrazol-5-Ol, 3-Methyl-1-Phenyl-, Hydrogen Sulfate (Ester) is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are available upon request, supporting your regulatory and quality assurance requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong bases and oxidizing agents. For long-term storage, consider under an inert atmosphere to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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