4-Pyridoxic Acid

Name: 4-Pyridoxic Acid
Brand: Vaqora Chemicals
SKU: VQ-033389

About 4-Pyridoxic Acid

4-Pyridoxic Acid is a process intermediate or related compound of Pyridoxine carrying the CAS registry number 82-82-6. With the molecular formula C8H9NO4, it has a molar mass of 183.16 g/mol. The IUPAC name is 3-hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carboxylic acid. It is also known as Pyridoxic acid or 4-Pyridoxinic acid.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

Process chemists and analysts use it when developing synthetic routes to Pyridoxine, tracking process-related impurities and validating analytical methods. It is used across pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 4-Pyridoxic Acid in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

API route development
Impurity fate & purge studies
Analytical method development
Fine chemical synthesis

Industries

Related to Pyridoxine

View every impurity, metabolite and intermediate we list for Pyridoxine.

Pyridoxine impurities

Specifications & identifiers

Chemical identifiers
Product name	4-Pyridoxic Acid
Catalogue No.	VQ-033389
CAS Number	82-82-6
IUPAC name	3-hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carboxylic acid
Molecular formula	C₈H₉NO₄
Molecular weight	183.16 g/mol
Exact mass	183.0532
HSN code	2933
InChIKey	HXACOUQIXZGNBF-UHFFFAOYSA-N
SMILES	CC1=NC=C(C(=C1O)C(=O)O)CO
PubChem CID	6723

Physical properties
Physical form	Solid
LogP (XLogP3)	0.1
H-bond donors / acceptors	3 / 5
TPSA	90.7 Å²
Synonyms	Pyridoxic acid, 4-Pyridoxinic acid, 4-Pyridoxylic acid, 4-Pyridoxinecarboxylic acid, 4-Pyridoxinsaeure, 2-Methyl-3-hydroxy-4-carboxy-5-hydroxymethylpyridine, 3-Hydroxy-5-(hydroxymethyl)-2-methyl-4-pyridinecarboxylic acid, 4-Pyridinecarboxylic acid, 3-hydroxy-5-(hydroxymethyl)-2-methyl-, Pyridoxinecarboxylic Acid

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 4-Pyridoxic Acid?

The CAS Registry Number of 4-Pyridoxic Acid is 82-82-6. It is also known as Pyridoxic acid, 4-Pyridoxinic acid, 4-Pyridoxylic acid.

What is the molecular formula and molecular weight of 4-Pyridoxic Acid?

4-Pyridoxic Acid has the molecular formula C8H9NO4 and a molecular weight of 183.16 g/mol. Its IUPAC name is 3-hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carboxylic acid.

What is 4-Pyridoxic Acid used for?

4-Pyridoxic Acid is supplied as a characterised reference material related to Pyridoxine. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of 4-Pyridoxic Acid can I order?

We supply 4-Pyridoxic Acid, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 4-Pyridoxic Acid?

Yes. Every lot of 4-Pyridoxic Acid is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 4-Pyridoxic Acid be shipped internationally?

Yes. 4-Pyridoxic Acid is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.