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4,6-Dihydroxy-2-methylpyrimidine

Also known as: 2-Methyl-4,6-pyrimidinediol, 2-Methyl-4,6-pyrimidinedione, 2-Methylpyrimidine-4,6(1H,5H)-dione, 2-Methyl-1H-pyrimidine-4,6-dione, 6-Hydroxy-2-methylpyrimidin-4(1H)-one, 6-Hydroxy-2-methyl-4(1H)-pyrimidinone, 2-Methyl-1H-pyrimidin-4,6-dion, 2-Methyl-4,6-dihydroxypyrimidine, 4,6(1H,5H)-Pyrimidinedione, 2-methyl-, 6-Hydroxy-2-methylpyrimidin-4(3H)-one, MFCD00006104, EINECS 254-941-9

4,6-Dihydroxy-2-methylpyrimidine (CAS 40497-30-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O2 and a molecular weight of 126.113 g/mol. Key properties include a melting point of 360 ºC, a boiling point of 314.4±22.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 143.9±22.3 °C. 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.
40497-30-1
Jingsj CID
J-11524-2
Molecular Formula
C5H6N2O2
Molecular Weight
126.113 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point360 ºC
Boiling Point314.4±22.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point143.9±22.3 °C
Exact Mass126.042931
PSA66.24000
LogP-1.62
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.614

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • 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 4,6-Dihydroxy-2-methylpyrimidine?

The CAS number of 4,6-Dihydroxy-2-methylpyrimidine is 40497-30-1.

What are the molecular formula and molecular weight of 4,6-Dihydroxy-2-methylpyrimidine?

4,6-Dihydroxy-2-methylpyrimidine has molecular formula C5H6N2O2 and molecular weight 126.113 g/mol.

Is 4,6-Dihydroxy-2-methylpyrimidine hazardous?

4,6-Dihydroxy-2-methylpyrimidine 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 4,6-Dihydroxy-2-methylpyrimidine?

For 4,6-Dihydroxy-2-methylpyrimidine, Upstream Products: Acetamidine hydrochloride, Diethyl malonate; Downstream Products: 4,6-dichloro-2-methylpyrimidin-5-amine, 2-Methyl-4-pyrimidinamine, 4-Amino-6-hydroxy-2-methylpyrimidine.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "4,6-Dihydroxy-2-methylpyrimidine (CAS 40497-30-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11524-2 (accessed 2026-11-09).

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