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ChemicalBook >> CAS DataBase List >>2,4-Dihydroxypyridine

2,4-Dihydroxypyridine

2,4-Dihydroxypyridine Structure
2,4-Dihydroxypyridine structure
CAS No.
626-03-9
Chemical Name:
2,4-Dihydroxypyridine
Synonyms
4-Hydroxypyridin-2(1H)-one;Dihydroxypyridine;4-diol;3-DEAZAURACIL;4-HYDROXY-2-PYRIDONE;NSC 37839;NSC 119859;2,4-Pridinediol;4,6-Pyridinediol;2,4-PYRIDINEDIOL
CBNumber:
CB6746357
Molecular Formula:
C5H5NO2
Molecular Weight:
111.1
MDL Number:
MFCD00006273
MOL File:
626-03-9.mol
MSDS File:
SDS
Last updated:2026-07-27 17:00:41
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2,4-Dihydroxypyridine Properties

Melting point 272-276 °C (lit.)
Boiling point 208.19°C (rough estimate)
Density 1.3113 (rough estimate)
refractive index 1.4260 (estimate)
storage temp. Inert atmosphere,Room Temperature
solubility DMSO, Methanol
pka pK1:1.37(+1);pK2:6.45(0);pK3:13(+1) (20°C)
form powder
color light yellow
Water Solubility 6.211g/L(20 ºC)
BRN 108533
InChI InChI=1S/C5H5NO2/c7-4-1-2-6-5(8)3-4/h1-3H,(H2,6,7,8)
InChIKey ZEZJPIDPVXJEME-UHFFFAOYSA-N
SMILES C1(=O)NC=CC(O)=C1
CAS DataBase Reference 626-03-9(CAS DataBase Reference)
FDA UNII LQ01OR5OK4
UNSPSC Code 12352100

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
target organs Respiratory system
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36-37/39
WGK Germany  3
RTECS  UV1146800
HazardClass  IRRITANT
HS Code  29339900
Storage Class 11 - Combustible Solids
Hazard Classifications Eye Irrit. 2
Skin Irrit. 2
STOT SE 3
NFPA 704
1
2 0

2,4-Dihydroxypyridine price More Price(70)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 176974 2,4-Dihydroxypyridine 97% 626-03-9 1g $32.2 2023-01-07 Buy
Sigma-Aldrich 176974 2,4-Dihydroxypyridine 97% 626-03-9 5g $80.2 2023-01-07 Buy
TCI Chemical D2682 2,4-Dihydroxypyridine >98.0%(GC)(T) 626-03-9 1g $68 2026-04-30 Buy
Usbiological 270630 2,4-Dihydroxypyridine Asreported 626-03-9 5g $313 2026-06-03 Buy
Usbiological 270630 2,4-Dihydroxypyridine Asreported 626-03-9 10g $425 2026-06-03 Buy
Product number Packaging Price Buy
176974 1g $32.2 Buy
176974 5g $80.2 Buy
D2682 1g $68 Buy
270630 5g $313 Buy
270630 10g $425 Buy

2,4-Dihydroxypyridine Chemical Properties, Uses, Production

Description

2,4-Dihydroxypyridine belongs to the class of organic compounds known as pyridinones. Pyridinones are compounds containing a pyridine ring, which bears a ketone. This compound has been identified in human blood. 2,4-dihydroxypyridine is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically 2,4-Dihydroxypyridine is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources.

Application

2,4-Dihydroxypyridine is profusely employed in multiple fields such as pesticide design, pharmacology, and clinical therapeutics[1]. This compound could used as a new growth-directing agent to to prepare AgPt nanorings supported on reduced graphene oxide (AgPt NRs-rGO) through a facile one-pot wet-chemical route. This label-free electrochemical immunosensor could be used for the sensitive detection of CEA[2].

Chemical Properties

white to yellow-beige crystals or cryst. powder

Uses

2,4-Dihydroxypyridine (3-deazauracil) was used in the synthesis of diazaphenoxathiin skeleton.

Definition

ChEBI: 2,4-Dihydroxypyridine is a pyridone.

General Description

2,4-Dihydroxypyridine (3-deazauracil) is a potent inhibitor of dihydrouracil dehydrogenase.

References

[1] Pajares A, et al. Ionization effects on the sensitized photooxidation of 2,3-dihydroxypyridine and 2,4-dihydroxypyridine: a kinetic study. Journal of Photochemistry and Photobiology A: Chemistry, 2002; 153: 101-107.
[2] Wang R, et al. A label-free electrochemical immunosensor based on AgPt nanorings supported on reduced graphene oxide for ultrasensitive analysis of tumor marker. Sensors and Actuators B: Chemical, 2017; 254: 1174-1181.

2,4-Dihydroxypyridine Preparation Products And Raw materials

Raw materials

Preparation Products

3-Aminopyridine-2,4-diol 2,4-Dihydroxy-3-nitropyridine 4-Amino-2-chloropyridine 4-Amino-2-bromopyridine N-(2,4-Dihydroxypyridin-3-yl)acetamide
2,4-Dichloro-3-amino-6-bromopyridine 2,3,4-trichloro-pyridine 2,4-Dichloro-3-aminopyridine

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2,4-Dihydroxypyridine Suppliers

Global Suppliers ( 420)
Supplier Tel Email Country ProdList Advantage
Shanghai Jiajie Biotechnology Co., Ltd 19542788059 sales@jonellchem.com China 424 58
Shandong Meiao Huawei Technology Co., LTD 0531-88682301 18595278766 yuhongmeng@mayowell.com China 88 58
Shandong Laifu Technology Development Co., Ltd. 13306419651 1375993372@qq.com China 57 58
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
INTATRADE GmbH +49 3493/605464 sales@intatrade.de Germany 3563 66
3B Pharmachem (Wuhan) International Co.,Ltd. 18930552037 3bsc@sina.com China 15813 69
future industrial shanghai co., ltd 400-0066400 13621662912 sales@jonln.com China 1989 65
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Supplier Advantage
Shanghai Jiajie Biotechnology Co., Ltd 58
Shandong Meiao Huawei Technology Co., LTD 58
Shandong Laifu Technology Development Co., Ltd. 58
J & K SCIENTIFIC LTD. 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 62
INTATRADE GmbH 66
3B Pharmachem (Wuhan) International Co.,Ltd. 69
future industrial shanghai co., ltd 65
Alfa Aesar 84
TCI (Shanghai) Development Co., Ltd. 81

View Latest Price from 2,4-Dihydroxypyridine manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2,4-Dihydroxypyridine pictures 2026-07-27 2,4-Dihydroxypyridine
626-03-9
 97.79% 10g TargetMol Chemicals Inc.
2,4-Dihydroxypyridine pictures 2025-04-04 2,4-Dihydroxypyridine
626-03-9
 1KG 98% 1ton Henan Aochuang Chemical Co.,Ltd.
Pyridine-2,4-diol pictures 2022-02-22 Pyridine-2,4-diol
626-03-9
 1KG 99.2% 100 tons Honest Joy Holdings Limited

2,4-Dihydroxypyridine Spectrum

2,4-Dihydroxypyridine(626-03-9)MS2,4-Dihydroxypyridine(626-03-9)1HNMR2,4-Dihydroxypyridine(626-03-9)13CNMR2,4-Dihydroxypyridine(626-03-9)IR12,4-Dihydroxypyridine(626-03-9)IR22,4-Dihydroxypyridine(626-03-9)Raman

626-03-9 (2,4-Dihydroxypyridine) Related Search:

1-Hydroxyethylidene-1,1-diphosphonic acid Triclosan 4-Hydroxypyridine 1,3-Dihydroxyacetone Chrysin
2-Hydroxypyridine 3-Hydroxypyridine Diethyl 1,4-dihydro-2,6-dimethyl-3,5-pyridinedicarboxylate Butylated hydroxytoluene (BHT) Chlorophosphonazo III
2,5-Pyridinedicarboxylic acid Dipiperidinomethane 4,6-Dihydroxypyridine-3-carboxylic acid 5-Chloro-4,6-dihydroxypyridine-3-carboxylic acid ethyl ester 3,4-Dihydroxypyridine
2,4-Quinolinediol 2,4-Dihydroxyquinoline monosodium salt 2,3-DIHYDROXYPYRIDINE,2,3-DIHYDROXYPYRIDINE 99%

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3-Deazauracil, 4-Hydroxy-2-pyridone, 2,4-PYridinediol 2(1H)-Pyridone, 4-hydroxy. 2,4-Dihydroxypyridine, HPLC 97% NSC 119859 NSC 37839 2,4-Dihydroxypyridine 2,4-Pyridinediol, 3-Deazauracil, 4-Hydroxy-2-pyridone 2-Hydroxy-1H-pyridin-4-one 4-Hydroxy-2(1H)-pyridinone 2,4-Dihydroxypyridine ,98% 4,6-Pyridinediol 4-Hydroxy-2(1H)-pyridone 2,4-Pridinediol 2,4-Dihydoxypyridine 4-diol 4-hydroxy-2(1h)-pyridinon 3-Deazauracil 2,4-Pyridinediol 2,4-Dihydroxypyridine, 2,4-Pridinediol, 4-HYDROXY-2-PYRIDONE, 3-DEAZAURACIL Dihydroxypyridine 2,4-two hydroxypyridine Pyridine-2,4-diol 98% 4-hydroxy-1,2-dihydropyridin-2-one 4-hydroxy-2(1h)-pyridon 2,4-PYRIDINEDIOL 2(1H)-PYRIDINONE, 4-HYDROXY- TIMTEC-BB SBB004331 2,4-Dihydroxypyridine,97% 2,4-Dihydroxypyridine 97% 2,4-Dihydroxypyridine> Gimeracil Impurity 12 2,4-Dihydroxypyridine ISO 9001：2015 REACH 4-hydroxy-1H-pyridin-2-one 2,4-Dihydroxypyridine Manufacturer/High quality/Best price/In stock CAS NO.626-03-9 2,4-Dihydroxypyridine, 10 mM in DMSO 3-DEAZAURACIL 4-Hydroxypyridin-2(1H)-one 4-HYDROXY-2-PYRIDONE 626-03-9 626-06-9 Building Blocks C5 Pyridines Heterocyclic Building Blocks Building Blocks C5 Chemical Synthesis Heterocyclic Building Blocks Heterocycle-Pyridine series Pyridine Series Pyridine Pyridines derivates Aromatics Compounds Aromatics Bases & Related Reagents Nucleotides Pyridines