Molekula
4-Chlorouracil
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
4-Chlorouracil is a chlorinated pyrimidine derivative used in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. It serves as an intermediate in the development of nucleoside analogs and other bioactive compounds. Available with CAS number 4270-27-3, its molecular formula is C4H3ClN2O2 and molecular weight is 146.53 g/mol. Stored at ambient temperature, it carries a warning signal word due to potential hazards. Molekula supplies 4-Chlorouracil 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 — £30.90 per pack ex VAT · £37.08 inc. VAT
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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.
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Specifications
| Property | Value |
|---|---|
| Appearance | Solid |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 30192608 |
| CAS Number | 4270-27-3 |
| IUPAC Name | 6-chloro-1H-pyrimidine-2,4-dione |
| EC Number | 224-258-0 |
| Molecular Formula | C4H3ClN2O2 |
| Molecular Weight | 146.53 |
| Exact Mass | 145.9883 |
| SMILES | C1=C(NC(=O)NC1=O)Cl |
| InChIKey | PKUFNWPSFCOSLU-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H3ClN2O2/c5-2-1-3(8)7-4(9)6-2/h1H,(H2,6,7,8,9) |
| PubChem CID | 73272 |
| REACH Code | Y113 |
| HTS Code | 29335995 |
| Tariff Code | 2933599590 |
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
- P308+313 IF exposed or concerned: Get medical advice/attention
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
- 2,4(1H,3H)-Pyrimidinedione, 6-chloro-
- 4-Chloro-2,6-dihydroxypyrimidine
- 6-chloro-1,2,3,4-tetrahydropyrimidine-2,4-dione
- 6-chloro-1H-pyrimidine-2,4-dione
- 6-Chloro-2,4-dihydroxypyrimidine
- 6-Chloro-2,4(1H,3H)-pyrimidinedione
- 6-Chloropyrimidine-2,4-diol
- 6-chloropyrimidine-2,4(1H,3H)-dione
- 6-Chlorouracil
Frequently asked questions
What is 4-Chlorouracil used for?
4-Chlorouracil is primarily used as an intermediate in the synthesis of pharmaceuticals and nucleic acid analogs.
What is the chemical formula and molecular weight of 4-Chlorouracil?
The formula is C4H3ClN2O2 with a molecular weight of 146.53 g/mol.
How should 4-Chlorouracil be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade of 4-Chlorouracil does Molekula supply?
Molekula supplies 4-Chlorouracil in research grade.
Can Molekula supply 4-Chlorouracil in bulk?
Yes, Molekula can supply 4-Chlorouracil in bulk quantities—please contact us for pricing and availability.
What documentation comes with my order of 4-Chlorouracil?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS).
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.