Molekula
Famciclovir
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Famciclovir is an antiviral medication used to treat herpes simplex virus and varicella-zoster virus infections. It is available in powder form for research and pharmaceutical applications. CAS: 104227-87-4, Molecular Formula: C14H19N5O4, Molecular Weight: 321.33 g/mol. Store at 2 to 8 °C. Signal word: Danger.
Molekula supplies Famciclovir at ≥ 99% purity in 25 mg packs, from £71.04 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis, and safety data sheets are available in 6 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 5 December 2026
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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25 mg — £59.20 per pack ex VAT · £71.04 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 |
| Identification | Conforms to reference |
| Assay | ≥ 99% |
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 |
|---|---|
| Melting Point | 102-104 °C |
| Solubility (other solvents) | Freely soluble in acetone, methanol; sparingly soluble in ethanol, isopropanol |
Source: PubChem CID 3324 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 80691108 |
| CAS Number | 104227-87-4 |
| IUPAC Name | [2-(acetyloxymethyl)-4-(2-aminopurin-9-yl)butyl] acetate |
| Molecular Formula | C14H19N5O4 |
| Molecular Weight | 321.33 |
| Exact Mass | 321.1437 |
| SMILES | CC(=O)OCC(CCN1C=NC2=CN=C(N=C21)N)COC(=O)C |
| InChIKey | GGXKWVWZWMLJEH-UHFFFAOYSA-N |
| InChI | InChI=1S/C14H19N5O4/c1-9(20)22-6-11(7-23-10(2)21)3-4-19-8-17-12-5-16-14(15)18-13(12)19/h5,8,11H,3-4,6-7H2,1-2H3,(H2,15,16,18) |
| PubChem CID | 3324 |
| REACH Code | Y110 |
| HTS Code | 2933599500 |
| Tariff Code | 2933599590 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H319 Causes serious eye irritation
- H336 May cause drowsiness or dizziness
- H350 May cause cancer
- H361 Suspected of damaging fertility or the unborn child
Precautionary statements
- P201 Obtain special instructions before use
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P263 Avoid contact during pregnancy/while nursing
- 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
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- [2-(acetyloxymethyl)-4-(2-aminopurin-9-yl)butyl] acetate
- 1,3-Propanediol, 2-(2-(2-amino-9H-purin-9-yl)ethyl)-, diacetate (ester)
- 2-(2-(2-Amino-9H-purin-9-yl)ethyl)-1,3-propanediol diacetate (ester)
- 2-(2-(2-Amino-9H-purin-9-yl)ethyl)propane-1,3-diyl diacetate
- 2-[2-(2-amino-9H-purin-9-yl)ethyl]-1,3-propanediol diacetate
- 9-[4-acetoxy-3-(acetoxymethyl)but-1-yl]-2-aminopurine
- Acetic acid 2-acetoxymethyl-4-(2-amino-purin-9-yl)-butyl ester
- BRL 42810
- Famciclovirum
- Famvir
Frequently asked questions
What is Famciclovir used for?
Famciclovir is an antiviral medication used to treat herpes infections, including genital herpes, herpes zoster (shingles), and cold sores.
What is the chemical formula and molecular weight of Famciclovir?
The chemical formula is C14H19N5O4, and the molecular weight is 321.33 g/mol.
How should Famciclovir be stored?
Famciclovir should be stored at 2 to 8 °C and protected from light and moisture.
What grade of Famciclovir does Molekula supply?
Molekula supplies Famciclovir as a white to off-white powder with an assay of ≥ 99%, with identification conforming to reference.
Can Molekula supply Famciclovir in bulk quantities?
Yes, Molekula can supply Famciclovir in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a Famciclovir order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Where can I buy Famciclovir?
Directly from Molekula, which lists Famciclovir in 25 mg packs from £71.04 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
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.