Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

Safety Information

153281

Sigma-Aldrich

2,6-Dihydroxypyridine-4-carboxylic acid

97%

Synonym(s):

Citrazinic acid, 2,6-Dihydroxyisonicotinic acid, 2,6-Dihydroxypyridine-4-carboxylic acid

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C6H5NO4
CAS Number:
99-11-6
Molecular Weight:
155.11
Beilstein:
383736
EC Number:
202-731-2
MDL number:
MFCD00006274
UNSPSC Code:
12352100
PubChem Substance ID:
24849298
NACRES:
NA.22

Quality Level

100

Assay

97%

mp

>300 °C (lit.)

functional group

carboxylic acid

SMILES string

OC(=O)c1cc(O)nc(O)c1

InChI

1S/C6H5NO4/c8-4-1-3(6(10)11)2-5(9)7-4/h1-2H,(H,10,11)(H2,7,8,9)

InChI key

CSGQJHQYWJLPKY-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

Application

2,6-Dihydroxypyridine-4-carboxylic acid (citrazinic acid) was used to prepare 2,6-dibromo-4-(hexoxymethyl)pyridine. It was also used to synthesize the derivatives of oxazinones and pyrimidinones.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

153281-BULK:
153281-250G:
153281-25G:
153281-100G:
153281-VAR:
153281-25KG:

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
STBJ8821
STBH3262
STBF4415V
S37282
35935

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Chad M Amb et al.
The Journal of organic chemistry, 71(12), 4696-4699 (2006-06-06)
Although brominated bipyridines and terpyridines are highly desirable synthetic building blocks for both ligand design and macro- or supramolecular applications, few such synthetic precursors have been reported that include much-needed solubilizing groups. Reported here is an inexpensive route to 2,6-dibromo-4-(hexoxymethyl)pyridine
Aisha S M Hossan et al.
Molecules (Basel, Switzerland), 17(11), 13642-13655 (2012-11-21)
A series of pyridines, pyrimidinones, oxazinones and their derivatives were synthesized as antimicrobial agents using citrazinic acid (2,6-dihydroxyisonicotinic acid) as a starting material. α,β-Unsaturated ketones 3a-c were condensed with cyanothio-acetamide in the presence of ammonium acetate to give 2-cyanopyridinethiones 4a-c

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service