Molekula
Flucytosine (5-Fluorocytosine)
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
Flucytosine (5-Fluorocytosine) is an antifungal medication used to treat serious fungal infections, particularly those caused by Candida and Cryptococcus species. It functions by inhibiting fungal DNA and RNA synthesis. Available in powder form with a molecular formula of C4H4FN3O, a molecular weight of 129.09 g/mol, and a CAS number of 2022-85-7. Store at 2 to 8 °C. Signal word: Warning. Molekula supplies Flucytosine 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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1 g — £24.80 per pack ex VAT · £29.76 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 | White to off-white powder |
| Heavy metals | ≤ 0.05% |
| Loss on Drying | ≤ 1.5% |
| Solubility | Sparingly soluble in water: Slightly soluble in alcohol |
| Assay | 98.5 to 101.0% |
| Residue on Ignition | ≤ 0.1% |
| Total Impurities | ≤ 0.5% |
| Fluorouracil | ≤ 0.1% |
| Cytosine | ≤ 0.1% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White crystalline solid |
| Odour | Odorless |
| Melting Point | 296 °C |
| Solubility (other solvents) | Slightly soluble in alcohol; practically insoluble in chloroform, ether |
| pKa | pKa = 3.26 |
Source: PubChem CID 3366 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 33980289 |
| CAS Number | 2022-85-7 |
| IUPAC Name | 6-amino-5-fluoro-1H-pyrimidin-2-one |
| EC Number | 217-968-7 |
| Molecular Formula | C4H4FN3O |
| Molecular Weight | 129.09 |
| Exact Mass | 129.0338 |
| SMILES | C1=NC(=O)NC(=C1F)N |
| InChIKey | XRECTZIEBJDKEO-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H4FN3O/c5-2-1-7-4(9)8-3(2)6/h1H,(H3,6,7,8,9) |
| PubChem CID | 3366 |
| REACH Code | Y110 |
| HTS Code | 29335995 |
| Tariff Code | 2933599590 |
Safety & GHS
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Serious Health Hazard
GHS08
Hazard statements
- H361 Suspected of damaging fertility or the unborn child
Precautionary statements
- P202 Do not handle until all safety precautions have been read and understood
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P281 Use personal protective equipment as required
- P308+313 IF exposed or concerned: Get medical advice/attention
- P405 Store locked up
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
- 5-Fluorocystosine
- 5-Fluorocytosin
- 5-Fluorocytosine
- Ancobon
- Ancotil
- Flucytosin
- flucytosine
- Fluocytosine
- Fluorcytosine
- Fluorocytosine
Frequently asked questions
What is Flucytosine used for?
Flucytosine is an antifungal medication used to treat serious fungal infections, particularly those caused by Candida and Cryptococcus species.
What is the chemical formula and molecular weight of Flucytosine?
The chemical formula is C4H4FN3O and the molecular weight is 129.09 g/mol.
How should Flucytosine be stored?
Flucytosine should be stored at 2 to 8 °C and protected from light and moisture.
What grade of Flucytosine does Molekula supply?
Molekula supplies Flucytosine in research-grade purity suitable for laboratory use.
Can Molekula supply Flucytosine in bulk?
Yes, Molekula can supply Flucytosine in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a Flucytosine order?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS) with the shipment.
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.