1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
Also known as: DMPU, N,N'-Dimethylpropyleneurea, 1,3-Dimethyltetrahydropyrimidin-2(1H)-one, 1,3-dimethyl-1,3-diazinan-2-one, Tetrahydro-1,3-dimethyl-2(1H)-pyrimidinone, N,N-Dimethylpropyleneurea
1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone (CAS 7226-23-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H12N2O and a molecular weight of 128.17 g/mol. Key properties include a melting point of -20 °C, a boiling point of 240.1±0.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 85.3±11.1 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H317 — May cause an allergic skin reaction and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7226-23-5
- Jingsj CID
- J-3006-8
- Molecular Formula
- C6H12N2O
- Molecular Weight
- 128.17 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -20 °C |
|---|---|
| Boiling Point | 240.1±0.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 85.3±11.1 °C |
| Exact Mass | 128.094955 |
| PSA | 23.55000 |
| LogP | 0.36 |
| Vapor Pressure | 0.0±0.4 mmHg at 25°C |
| Refractive Index | 1.474 |
| Additional Property | soluble |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H317 — May cause an allergic skin reaction
- H318 — Causes serious eye damage
- 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 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone?
The CAS number of 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone is 7226-23-5.
What are the molecular formula and molecular weight of 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone?
1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone has molecular formula C6H12N2O and molecular weight 128.17 g/mol.
Is 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone hazardous?
1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H317 — May cause an allergic skin reaction; H318 — Causes serious eye damage.
What are the upstream and downstream products of 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone?
For 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone, Upstream Products: N,N'-Dimethyl-1,3-propanediamine, Carbon dioxide, 1,3-Dichloropropane; Downstream Products: 2-Chloro-3-pyridinecarboxaldehyde, 9-(4-Bromophenyl)carbazole, 1-Methyl-2-pyrrolidinone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone (CAS 7226-23-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3006-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.