2-Hydroxypyridine
Synonym(s):2(1H)-Pyridone;2-Pyridinol
- CAS NO.:142-08-5
- Empirical Formula: C5H5NO
- Molecular Weight: 95.1
- MDL number: MFCD00006268
- EINECS: 205-520-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-02-25 18:47:31

What is 2-Hydroxypyridine?
Chemical properties
white to light yellow crystal
The Uses of 2-Hydroxypyridine
2-Hydroxypyridine is a bifunctional catalyst for a wide variety of acylation reactions, catalyst for generating β-oxopropyl carbonates from cyclic carbonates and alcohols and in the aminolysis of a polyglutamate. It is used in peptide synthesis.
The Uses of 2-Hydroxypyridine
Catalyst for generating β-oxopropyl carbonates from cyclic carbonates and alcohols and in the aminolysis of a polyglutamate.
Definition
ChEBI: 2-Hydroxypyridine is a monohydroxypyridine that is pyridine substituted by a hydroxy group at position 2. It has a role as a plant metabolite.
General Description
2-Hydroxypyridine, an enolic tautomer of 2-pyridone, belongs to the class of volatile organic compounds (VOCs).
Safety Profile
Moderately toxic by intraperitoneal and intravenous routes. A combustible liquid. When heated to decomposition it emits toxic vapors of NOx.
Purification Methods
Distil the pyridone under vacuum to remove coloured impurity, then recrystallise from *benzene, CCl4, EtOH or CHCl3/diethyl ether. It can be sublimed under high vacuum. [DePue et al. J Am Chem Soc 107 2131 1985, Beilstein 21/7 V 106.]
Properties of 2-Hydroxypyridine
Melting point: | 105-107 °C (lit.) |
Boiling point: | 280-281 °C (lit.) |
Density | 1.39 |
refractive index | 1.5939 (estimate) |
Flash point: | 210 °C |
storage temp. | Sealed in dry,Room Temperature |
solubility | 450g/l |
pka | 0.75(at 20℃) |
form | Liquid |
color | Colorless to yellow to brown, darken on storage with no loss of purity |
Water Solubility | Soluble in water 450 g/L @ 20°C and ethanol, slightly soluble in benzene and ether. |
BRN | 105786 |
CAS DataBase Reference | 142-08-5(CAS DataBase Reference) |
NIST Chemistry Reference | 2(1H)-Pyridinone(142-08-5) |
EPA Substance Registry System | 2(1H)-Pyridinone (142-08-5) |
Safety information for 2-Hydroxypyridine
Signal word | Danger |
Pictogram(s) |
![]() Skull and Crossbones Acute Toxicity GHS06 |
GHS Hazard Statements |
H301:Acute toxicity,oral |
Computed Descriptors for 2-Hydroxypyridine
2-Hydroxypyridine manufacturer
Gravitas Pharma Pvt Ltd
ALTRAKEM PHARMA LIFE SCIENCES PRIVATE LIMITED
JSK Chemicals
Molsyns Research
New Products
Methyl (R)-1-Boc-4,4-difluoropyrrolidine-2-carboxylate 2,2-Difluoropropylamine hydrochloride tert-butyl 3-bromoazetidine-1-carboxylate (R)-1-Boc-3-hydroxypyrrolidine DIFLUOROACETIC ANHYDRIDE 2,2-Difluoropropionic acid Diallylamine, 99% Calcium hydroxide, 95% Aluminum oxide, basic 2-Bromophenylacetonitrile, 97% L-tert-Leucine,97% N-Hydroxy-2-methylpropanimidamide 4-(3,4-Dichlorophenyl)-3,4-Dihydro-N-Methyl-1-(2H)-Naphthalenimine (Schiff Base) 2-AMINO-3,5-DIBROMO BENZALDEHYDE [ADBA] L-Glutamic Acid Dimethyl Ester Hcl 10-Methoxy-5H-dibenz[b,f]azepine 5-Cyanophthalide N, N-Carbonyldiimidazole (CDI) Dibenzoyl Peroxide Titanium Dioxide 2-(Methylthio) Benzonitrile Sodium Acetate Anhydrous Allopurinol 1,5-DibromopentaneRelated products of tetrahydrofuran






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