5-Hydroxymethyluracil

5-羟甲基尿嘧啶

Also known as: 5-(Hydroxymethyl)uracil, 5-(Hydroxymethyl)-2,4(1H,3H)-pyrimidinedione, 2,4(1H,3H)-Pyrimidinedione, 5-(hydroxymethyl)-, 5-(Hydroxymethyl)pyrimidine-2,4(1H,3H)-dione, α-Hydroxythymine

5-Hydroxymethyluracil (CAS 4433-40-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O3 and a molecular weight of 142.113 g/mol. It is also known as 5-(Hydroxymethyl)uracil, 5-(Hydroxymethyl)-2,4(1H,3H)-pyrimidinedione and 2,4(1H,3H)-Pyrimidinedione, 5-(hydroxymethyl)-. Key properties include a melting point of >300 °C(lit.), a boiling point of 530.4ºC at 760mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 274.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4433-40-3
Jingsj CID
J-1994251-1
Molecular Formula
C5H6N2O3
Chinese Name
5-羟甲基尿嘧啶
Molecular Weight
142.113 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point>300 °C(lit.)
Boiling Point530.4ºC at 760mmHg
Density1.4±0.1 g/cm3
Flash Point274.6ºC

Frequently Asked Questions

What is the CAS number of 5-Hydroxymethyluracil?

The CAS number of 5-Hydroxymethyluracil is 4433-40-3.

What are the molecular formula and molecular weight of 5-Hydroxymethyluracil?

5-Hydroxymethyluracil has molecular formula C5H6N2O3 and molecular weight 142.113 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Hydroxymethyluracil (CAS 4433-40-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1994251-1 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.