5-iodo-1,3-dimethyluracil
Also known as: 5-iodo-1,3-dimethylpyrimidine-2,4(1H,3H)-dione, 5-iodo-1,3-dimethylpyrimidine-2,4-dione, MFCD00192228
5-iodo-1,3-dimethyluracil (CAS 40738-83-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H7IN2O2 and a molecular weight of 266.03600 g/mol. Key properties include a melting point of 225ºC, a boiling point of 261.3ºC at 760 mmHg, a density of 2.04g/cm3 and a flash point of 111.8ºC. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 40738-83-8
- Jingsj CID
- J-9303-8
- Molecular Formula
- C6H7IN2O2
- Molecular Weight
- 266.03600 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 225ºC |
|---|---|
| Boiling Point | 261.3ºC at 760 mmHg |
| Density | 2.04g/cm3 |
| Flash Point | 111.8ºC |
| Exact Mass | 265.95500 |
| PSA | 44.00000 |
| Refractive Index | 1.665 |
| Additional Property | DMSO: soluble10mg/mL(lit.) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H317 — May cause an allergic skin reaction
- H332 — Harmful if inhaled
- H334 — May cause allergy or asthma symptoms if inhaled
- H361 — Suspected of damaging fertility or the unborn child
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 5-iodo-1,3-dimethyluracil?
The CAS number of 5-iodo-1,3-dimethyluracil is 40738-83-8.
What are the molecular formula and molecular weight of 5-iodo-1,3-dimethyluracil?
5-iodo-1,3-dimethyluracil has molecular formula C6H7IN2O2 and molecular weight 266.03600 g/mol.
Is 5-iodo-1,3-dimethyluracil hazardous?
5-iodo-1,3-dimethyluracil has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H317 — May cause an allergic skin reaction.
What are the upstream and downstream products of 5-iodo-1,3-dimethyluracil?
For 5-iodo-1,3-dimethyluracil, Upstream Products: 1,3-Dimethyluracil, 5-Iodouracil, iodomethane; Downstream Products: 1,3-Dimethyluracil, 1,3,5-Trimethyluracil.
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-iodo-1,3-dimethyluracil (CAS 40738-83-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9303-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.