Molekula
Uracil
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
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 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
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.
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 **pharmaceutical-grade and research-grade uracil**, depending on the application requirements.
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.
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.