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

2,4-Dihydroxypyridine

$4 - $2798.99
Product name: 2,4-Dihydroxypyridine
CAS: 626-03-9
MF: C5H5NO2
MW: 111.1
EINECS:210-924-8
MDL Number:MFCD00006273
Synonyms: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

Price76 Properties Safety Information Description

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aablocks
Absolute Chiral
Activate Scientific
AHH
AK Scientific
Ambeed
American Custom Chemicals Corporation
Apolloscientific
Atlantic Research Chemicals
Biosynth
ChemScene
Frontier Specialty Chemicals
Matrix Scientific
Medical Isotopes, Inc.
Sigma-Aldrich
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TCI Chemical
Thermo Scientific Chemicals
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1gm:
5 g

Manufactureraablocks
Product numberAA003FQK
Product description4-Hydroxypyridin-2(1H)-one 98%
Packaging1g
Price$4
Updated2026-05-28
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Manufactureraablocks
Product numberAA003FQK
Product description4-Hydroxypyridin-2(1H)-one 97%
Packaging5g
Price$10
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA003FQK
Product description4-Hydroxypyridin-2(1H)-one 98%
Packaging25g
Price$12
Updated2026-05-28
Buy

ManufacturerAbsolute Chiral
Product numberO1357-00-N
Product description4-hydroxypyridin-2(1H)-one 95%
Packaging1g
Price$5
Updated2026-05-23
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ManufacturerAbsolute Chiral
Product numberO1357-00-N
Product description4-hydroxypyridin-2(1H)-one 95%
Packaging1g
Price$45
Updated2021-12-16
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ManufacturerActivate Scientific
Product numberAS23087
Product description2,4-Dihydroxypyridine 98%
Packaging25g
Price$29
Updated2026-06-04
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ManufacturerActivate Scientific
Product numberAS23087
Product description2,4-Dihydroxypyridine 98%
Packaging5g
Price$18
Updated2026-06-04
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ManufacturerActivate Scientific
Product numberAS23087
Product description2,4-Dihydroxypyridine 98%
Packaging100g
Price$86
Updated2026-06-04
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ManufacturerAHH
Product numberMT-09921
Product description2,4-Dihydroxypyridine 98%
Packaging25g
Price$346
Updated2021-12-16
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ManufacturerAHH
Product numberMT-09921
Product description2,4-Dihydroxypyridine 97%
Packaging25g
Price$346
Updated2026-05-25
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ManufacturerAHH
Product numberMT-09921
Product description2,4-Dihydroxypyridine 97%
Packaging25g
Price$346
Updated2026-05-26
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ManufacturerAK Scientific
Product numberC230
Product description2,4-Dihydroxypyridine 98%(HPLC)
Packaging500g
Price$320
Updated2026-06-04
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ManufacturerAK Scientific
Product numberC230
Product description2,4-Dihydroxypyridine 98%(HPLC)
Packaging100g
Price$88
Updated2026-06-04
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ManufacturerAK Scientific
Product numberJ93652
Product description2,4-Dihydroxypyridine 95%
Packaging25g
Price$19
Updated2026-06-04
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ManufacturerAK Scientific
Product numberC230
Product description2,4-Dihydroxypyridine
Packaging5g
Price$14
Updated2021-12-16
Buy

ManufacturerAK Scientific
Product numberC230
Product description2,4-Dihydroxypyridine 98%(HPLC)
Packaging5g
Price$16
Updated2026-06-04
Buy

Manufacturer	Product number	Product description	Packaging	Price	Updated	Buy
aablocks	AA003FQK	4-Hydroxypyridin-2(1H)-one 98%	1g	$4	2026-05-28	Buy
aablocks	AA003FQK	4-Hydroxypyridin-2(1H)-one 97%	5g	$10	2026-05-28	Buy
aablocks	AA003FQK	4-Hydroxypyridin-2(1H)-one 98%	25g	$12	2026-05-28	Buy
Absolute Chiral	O1357-00-N	4-hydroxypyridin-2(1H)-one 95%	1g	$5	2026-05-23	Buy
Absolute Chiral	O1357-00-N	4-hydroxypyridin-2(1H)-one 95%	1g	$45	2021-12-16	Buy
Activate Scientific	AS23087	2,4-Dihydroxypyridine 98%	25g	$29	2026-06-04	Buy
Activate Scientific	AS23087	2,4-Dihydroxypyridine 98%	5g	$18	2026-06-04	Buy
Activate Scientific	AS23087	2,4-Dihydroxypyridine 98%	100g	$86	2026-06-04	Buy
AHH	MT-09921	2,4-Dihydroxypyridine 98%	25g	$346	2021-12-16	Buy
AHH	MT-09921	2,4-Dihydroxypyridine 97%	25g	$346	2026-05-25	Buy
AHH	MT-09921	2,4-Dihydroxypyridine 97%	25g	$346	2026-05-26	Buy
AK Scientific	C230	2,4-Dihydroxypyridine 98%(HPLC)	500g	$320	2026-06-04	Buy
AK Scientific	C230	2,4-Dihydroxypyridine 98%(HPLC)	100g	$88	2026-06-04	Buy
AK Scientific	J93652	2,4-Dihydroxypyridine 95%	25g	$19	2026-06-04	Buy
AK Scientific	C230	2,4-Dihydroxypyridine	5g	$14	2021-12-16	Buy
AK Scientific	C230	2,4-Dihydroxypyridine 98%(HPLC)	5g	$16	2026-06-04	Buy

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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
form :powder
pka :pK1:1.37(+1);pK2:6.45(0);pK3:13(+1) (20°C)
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)

Safety Information

Symbol(GHS):

Signal word:

Warning

Hazard statements:

Code	Hazard statements	Hazard class	Category	Signal word	P-Codes
H315	Causes skin irritation	Skin corrosion/irritation	Category 2	Warning	P264, P280, P302+P352, P321,P332+P313, P362
H319	Causes serious eye irritation	Serious eye damage/eye irritation	Category 2A	Warning	P264, P280, P305+P351+P338,P337+P313P
H335	May cause respiratory irritation	Specific target organ toxicity, single exposure;Respiratory tract irritation	Category 3	Warning

Precautionary statements:

P261	Avoid breathing dust/fume/gas/mist/vapours/spray.
P264	Wash hands thoroughly after handling.
P264	Wash skin thouroughly after handling.
P271	Use only outdoors or in a well-ventilated area.
P280	Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352	IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338	IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

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

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Suppliers and manufacturers

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$1.00
2,4-Dihydroxypyridine CAS:626-03-9

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2,4-Dihydroxypyridine

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Description

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