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5-Fluoro-1H-pyrimidin-2-one

Also known as: 5-Fluoropyrimidin-2(1H)-one, 5-Fluoro-2(1H)-pyrimidinone, 5-Fluoro-2-pyrimidinol, 5-Fluoropyrimidin-2-one, 5-fluoro-2-pyrimidinone, 5-fluoro-2-pyrimidone, 5-Fluoro-2-hydroxypyrimidine, 2-Hydroxy-5-fluoropyrimidine, 2(1H)-Pyrimidinone, 5-fluoro-(7CI,8CI,9CI)

5-Fluoro-1H-pyrimidin-2-one (CAS 2022-78-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H3FN2O and a molecular weight of 114.07800 g/mol. Key properties include a melting point of 170-174ºC and a density of 1.46g/cm3. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2022-78-8
Jingsj CID
J-47764-5
Molecular Formula
C4H3FN2O
Molecular Weight
114.07800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Melting Point170-174ºC
Density1.46g/cm3
Exact Mass114.02300
PSA46.01000
LogP0.32130
Refractive Index1.563

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger
  • H302 — Harmful if swallowed
  • H315 — Causes skin irritation
  • H318 — Causes serious eye damage
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933599090
Summary2933599090. 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-Fluoro-1H-pyrimidin-2-one?

The CAS number of 5-Fluoro-1H-pyrimidin-2-one is 2022-78-8.

What are the molecular formula and molecular weight of 5-Fluoro-1H-pyrimidin-2-one?

5-Fluoro-1H-pyrimidin-2-one has molecular formula C4H3FN2O and molecular weight 114.07800 g/mol.

Is 5-Fluoro-1H-pyrimidin-2-one hazardous?

5-Fluoro-1H-pyrimidin-2-one has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H318 — Causes serious eye damage.

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-Fluoro-1H-pyrimidin-2-one (CAS 2022-78-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47764-5 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.