Molekula
Uracil
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
Uracil is a naturally occurring pyrimidine base essential in RNA synthesis and genetic coding, widely used in biochemistry, molecular biology, and pharmaceutical research as a raw material for nucleotide production and as a reference standard in analytical assays. This white crystalline solid, with CAS 66-22-8 and molecular formula C4H4N2O2, has a molecular weight of 112.09 g/mol and is stable at ambient storage conditions with no hazard classification.
Molekula supplies Uracil at ≥99% purity in 100 g packs, from £37.08 inc. VAT. It is in stock for same-day dispatch. 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
In stock — same-day dispatch
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
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 |
| Melting Point | ≥300°C |
| Heavy metals | ≤10ppm |
| Loss on Drying | ≤0.5% |
| Chloride (Cl-) | ≤0.01% |
| Assay | ≥99% |
| Water (KF) | ≤1% |
| Arsenic (As) | ≤1ppm |
| Sulphates (SO4)(2-) | ≤0.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 338 °C |
| pKa | pKa = 9.45 |
Source: PubChem CID 1174 (DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 31200749 |
| CAS Number | 66-22-8 |
| IUPAC Name | 1H-pyrimidine-2,4-dione |
| EC Number | 200-621-9 |
| Molecular Formula | C4H4N2O2 |
| Molecular Weight | 112.09 |
| Exact Mass | 112.0273 |
| SMILES | C1=CNC(=O)NC1=O |
| InChIKey | ISAKRJDGNUQOIC-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H4N2O2/c7-3-1-2-5-4(8)6-3/h1-2H,(H2,5,6,7,8) |
| PubChem CID | 1174 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2933.59.9500 |
| Tariff Code | 2933599590 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
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
- 1,2,3,4-tetrahydropyrimidine-2,4-dione
- 1H-Pyrimidine-2,4-dione
- 2-hydroxy-4-(1H)-pyrimidione
- 2,4-Dioxopyrimidine
- 2,4-Pyrimidinedione
- 2,4(1H,3H)-Pyrimidinedione
- Hybar X
- Pirod
- pyrimidine-2,4(1H,3H)-dione
- Pyrod
Frequently asked questions
What is uracil commonly used for?
Uracil is primarily used in molecular biology as a nucleobase in RNA synthesis, as well as in pharmaceutical research and as a precursor for pyrimidine derivatives.
What is the chemical formula and molecular weight of uracil?
The chemical formula of uracil is C4H4N2O2, and its molecular weight is 112.09 g/mol.
How should uracil be stored?
Uracil should be stored at ambient temperature in a cool, dry place, away from direct sunlight and moisture.
What grades of uracil does Molekula supply?
Molekula supplies uracil with an assay of ≥99%, suitable for research and analytical applications.
Can Molekula supply uracil in bulk quantities?
Yes, Molekula can supply uracil in bulk quantities—please contact us for pricing and availability details.
What documentation comes with a uracil order?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a product specification sheet.
Where can I buy Uracil?
Directly from Molekula, which lists Uracil in 100 g packs from £37.08 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.