Molekula
Citrazinic acid (2,6-Dihydroxypyridine-4-carboxylic acid)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Citrazinic acid (2,6-Dihydroxypyridine-4-carboxylic acid) is a heterocyclic organic compound used in pharmaceutical synthesis and as a ligand in coordination chemistry. It appears as a yellow crystalline powder. CAS: 99-11-6, Molecular formula: C6H5NO4, Molecular weight: 155.11 g/mol, Storage: Ambient, Signal word: Warning. Molekula supplies Citrazinic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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500 g — £126.90 per pack ex VAT · £152.28 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Greyish yellow to dark green solid |
| Heavy metals | ≤20ppm |
| Loss on Drying | ≤1% |
| Assay (HPLC) | ≥97.0% |
| Methanol | ≤20ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
Identification
| Property | Value |
|---|---|
| SKU | 34778741 |
| CAS Number | 99-11-6 |
| IUPAC Name | 2-hydroxy-6-oxo-1H-pyridine-4-carboxylic acid |
| EC Number | 202-731-2 |
| Molecular Formula | C6H5NO4 |
| Molecular Weight | 155.11 |
| Exact Mass | 155.0219 |
| SMILES | C1=C(C=C(NC1=O)O)C(=O)O |
| InChIKey | CSGQJHQYWJLPKY-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H5NO4/c8-4-1-3(6(10)11)2-5(9)7-4/h1-2H,(H,10,11)(H2,7,8,9) |
| PubChem CID | 7425 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29337985 |
| Tariff Code | 2933790090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 2-hydroxy-6-oxo-1H-pyridine-4-carboxylic acid
- 2,6-Dihydroxy-4-carboxypyridine
- 2,6-Dihydroxy-4-pyridinecarboxylic acid
- 2,6-Dihydroxyisonicotinate
- 2,6-Dihydroxyisonicotinic acid
- 2,6-Dihydroxypyridine-4-carboxylic acid
- 4-Pyridinecarboxylic acid, 1,2-dihydro-6-hydroxy-2-oxo-
- CITRAZINIC ACID
- Isonicotinic acid, 1,2-dihydro-6-hydroxy-2-oxo-
- Kyselina citrazinova
Frequently asked questions
What is Citrazinic acid used for?
Citrazinic acid is primarily used as an intermediate in the synthesis of pharmaceuticals and dyes, particularly in the production of antiviral agents and pigments.
What is the chemical formula and molecular weight of Citrazinic acid?
The chemical formula is C6H5NO4 with a molecular weight of 155.11 g/mol.
How should Citrazinic acid be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade of Citrazinic acid does Molekula supply?
Molekula supplies Citrazinic acid in technical grade; custom grades are available upon request.
Can Molekula supply Citrazinic acid in bulk?
Yes, Molekula can supply Citrazinic acid in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with a purchase of Citrazinic acid?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.