Pharmaceutical Materials

4-Hydroxypyridine, with CAS number 626-64-2, is a vital organic compound utilized extensively in pharmaceuticals and organic synthesis. Its molecular formula, C₅H₅NO, and molecular weight of 95.10 g/mol define its chemical structure. This compound exhibits a melting point of 150–151°C and a boiling point of 380.6°C at 760 mmHg, making it suitable for reactions requiring elevated temperatures. Its appearance as a beige to light brown powder and solubility in water, ethanol, chloroform, and carbon tetrachloride enhance its utility in organic synthesis. As a hazardous substance (Xi), it requires careful handling to avoid skin, eye, and respiratory tract irritation. Its applications include serving as an intermediate in the production of diuretic drugs like torasemide and other pharmaceutical intermediates.

Usage： Used for the synthesis of diuretic torasemide or other pharmaceutical intermediates.

Packaging and Shipping： 25KG/drum or as per buyer requirements.

Storage: Storage in ventilated low temperature dry warehouse; Keep container closed and separately from Food and Oxidants.

Name	4-Pyridinol
Synonyms	4-Pyridol 4-PYRIDINOL 4-Pyridinol PYRIDIN-4-OL Pyridin-4-ol 4-pyridine phenol 4-Hydroxypyridine 4-Hydroxypyridone 4-HYDROXYPYRIDINE 4-hydroxy pyridine TIMTEC-BB SBB000030 Hydroxypyridine(Gamma-)
CAS	626-64-2
EINECS	210-958-3
InChI	InChI=1/C5H5NO/c7-5-1-3-6-4-2-5/h1-4H,(H,6,7)
InChIKey	GCNTZFIIOFTKIY-UHFFFAOYSA-N

Molecular Formula	C5H5NO
Molar Mass	95.1
Density	1.1418 (rough estimate)
Melting Point	150-151 °C (lit.)
Boling Point	230-235 °C/12 mmHg (lit.)
Flash Point	221 °C
Water Solubility	Soluble
Solubility	Dissolved in water ·
Appearance	Crystallization
Color	Beige to light brown
BRN	105800
pKa	3.2(at 20℃)
Storage Condition	Keep in dark place,Inert atmosphere,Room temperature
Sensitive	Easy to absorb moisture and sensitive to light
Refractive Index	1.5939 (estimate)
Physical and Chemical Properties	appearance light brown to off-white solid
Use	For the synthesis of diuretic torasemide or other drug intermediates

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