6-Chlorouracil
Also known as: 6-Chloro-2,4(1H,3H)-pyrimidinedione, 6-Chloropyrimidine-2,4(1H,3H)-dione, 4-Chlorouracil, 4-Chloro-2,6-dihydroxypyrimidine, 6-Chloro-2,4-dihydroxypyrimidine, Chlorouracil, NSC 210419, NSC 43265, 6-chloro-1H-pyrimidine-2,4-dione
6-Chlorouracil (CAS 4270-27-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H3ClN2O2 and a molecular weight of 146.532 g/mol. Key properties include a melting point of 290-295°C, a boiling point of 300°C and a density of 1.6±0.1 g/cm3. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4270-27-3
- Jingsj CID
- J-1063128-4
- Molecular Formula
- C4H3ClN2O2
- Molecular Weight
- 146.532 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 290-295°C |
|---|---|
| Boiling Point | 300°C |
| Density | 1.6±0.1 g/cm3 |
| Exact Mass | 145.988312 |
| PSA | 65.72000 |
| LogP | -0.52 |
| Refractive Index | 1.587 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933599090 |
|---|---|
| Summary | 2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 6-Chlorouracil?
The CAS number of 6-Chlorouracil is 4270-27-3.
What are the molecular formula and molecular weight of 6-Chlorouracil?
6-Chlorouracil has molecular formula C4H3ClN2O2 and molecular weight 146.532 g/mol.
Is 6-Chlorouracil hazardous?
6-Chlorouracil has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 6-Chlorouracil?
For 6-Chlorouracil, Upstream Products: 2,4,6-Trichloropyrimidine, 6-chloro-2,4-dimethoxypyrimidine, Barbituric acid; Downstream Products: 6-Methylaminouracil, 6-Iodouracil.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "6-Chlorouracil (CAS 4270-27-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1063128-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.