5,6-dimethyluracil
Also known as: 2,4(1H,3H)-Pyrimidinedione, 5,6-dimethyl-, 2,4-Dihydroxy-5,6-dimethylpyrimidine, 5,6-Dimethyl-2,4(1H,3H)-pyrimidinedione, 5,6-Dimethyl-2,4-pyrimidinediol, 5,6-Dimethylpyrimidine-2,4(1H,3H)-dione, 5,6-dimethyl-1H-pyrimidine-2,4-dione, 6-Methylthymine, NSC 49017, NSC 163903
5,6-dimethyluracil (CAS 26305-13-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H8N2O2 and a molecular weight of 140.140 g/mol. Key properties include a melting point of 297-300 °C (dec.)(lit.), a boiling point of 408.8ºC at 760mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 201ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 26305-13-5
- Jingsj CID
- J-30604-7
- Molecular Formula
- C6H8N2O2
- Molecular Weight
- 140.140 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 297-300 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 408.8ºC at 760mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 201ºC |
| Exact Mass | 140.058578 |
| PSA | 65.72000 |
| LogP | 0.47 |
| Vapor Pressure | 2.88E-07mmHg at 25°C |
| Refractive Index | 1.482 |
Frequently Asked Questions
What is the CAS number of 5,6-dimethyluracil?
The CAS number of 5,6-dimethyluracil is 26305-13-5.
What are the molecular formula and molecular weight of 5,6-dimethyluracil?
5,6-dimethyluracil has molecular formula C6H8N2O2 and molecular weight 140.140 g/mol.
What are the upstream and downstream products of 5,6-dimethyluracil?
For 5,6-dimethyluracil, Upstream Products: Ethyl 2-methylacetoacetate, Urea, 5,6-Dimethyl-2-thiouracil; Downstream Products: Acetylurea, Oxalic acid, 5-Hydroxy-5-methylhydantoin.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5,6-dimethyluracil (CAS 26305-13-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30604-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.