3-Isopropyl-4-methyl-1-pentyn-3-ol

3-异丙基-4-甲基-1-戊炔-3-醇

Also known as: 1-Pentyn-3-ol, 4-methyl-3-(1-methylethyl)-, 4-methyl-3-propan-2-ylpent-1-yn-3-ol, 3-Isopropyl-4-methyl-1-penty-3-ol, 3-i-propyl-4-methyl-1-pentyn-3-ol, 3-isopropyl-4-methyl-pent-1-yn-3-ol, 3-isopropyl-4-methylpent-1-yn-3-ol, 4-methyl-3-isopropyl-1-pentyn-3-ol, 4-methyl-3-propan-2-yl-pent-1-yn-3-ol, ETHYNYL DIISOPROPYL CARBINOL, pent-1-ynol-3 3-isopropyl, NSC 71444, NSC 2355

3-Isopropyl-4-methyl-1-pentyn-3-ol (CAS 5333-87-9) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C9H16O and a molecular weight of 140.22300 g/mol. It is also known as 1-Pentyn-3-ol, 4-methyl-3-(1-methylethyl)-, 4-methyl-3-propan-2-ylpent-1-yn-3-ol and 3-Isopropyl-4-methyl-1-penty-3-ol. Key properties include a boiling point of 165ºC 45mm, a density of 0.872 g/cm3 and a flash point of 55.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5333-87-9
Jingsj CID
J-28245-1
Molecular Formula
C9H16O
Chinese Name
3-异丙基-4-甲基-1-戊炔-3-醇
Molecular Weight
140.22300 g/mol
Category
Alcohols
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point165ºC 45mm
Density0.872 g/cm3
Flash Point55.9ºC

Frequently Asked Questions

What is the CAS number of 3-Isopropyl-4-methyl-1-pentyn-3-ol?

The CAS number of 3-Isopropyl-4-methyl-1-pentyn-3-ol is 5333-87-9.

What are the molecular formula and molecular weight of 3-Isopropyl-4-methyl-1-pentyn-3-ol?

3-Isopropyl-4-methyl-1-pentyn-3-ol has molecular formula C9H16O and molecular weight 140.22300 g/mol.

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

Last updated:

How to cite: Jingsj. "3-Isopropyl-4-methyl-1-pentyn-3-ol (CAS 5333-87-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28245-1 (accessed 2026-10-24).

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