2-Hydroxypropanenitrile

The cyanohydrin of ethanal, with hydroxyl and nitrile groups attached to the same carbon.

Formula
C3H5NO
Functional group
Hydroxynitriles; Nitriles
Molar mass
71.08 g/mol
Also known as
Lactonitrile, Acetaldehyde cyanohydrin, 2-羟基丙腈, 乙醛氰醇

Overview

The cyanohydrin of ethanal, with hydroxyl and nitrile groups attached to the same carbon.

Cyanohydrin formation adds a nitrile carbon to the original two-carbon aldehyde skeleton. The former carbonyl carbon becomes tetrahedral and stereogenic. This record leaves that centre unspecified; formation in an achiral environment does not select one configuration.

Identifiers

Formula
C3H5NO
Functional group
Hydroxynitriles; Nitriles
Molar mass
71.08 g/mol
Also known as
Lactonitrile, Acetaldehyde cyanohydrin, 2-羟基丙腈, 乙醛氰醇
Chemical identifiers
SMILES
CC(C#N)O
InChI
InChI=1S/C3H5NO/c1-3(5)2-4/h3,5H,1H3
PubChem CID
6572

Related compounds

References

  1. PubChem Compound Summary: 2-Hydroxypropanenitrile (CID 6572)National Center for Biotechnology Information · PubChem

    Identity, molecular formula, molecular weight and selected English aliases retrieved via PUG REST on 2026-09-16. Chinese search names are curated nomenclature translations. Unspecified stereochemistry remains unspecified.

  2. Organic Chemistry: Nucleophilic Addition of HCN: Cyanohydrin FormationJohn McMurry · OpenStax Organic Chemistry · 2023

    Supports cyanide addition to aldehydes and unhindered ketones followed by protonation to form cyanohydrins / hydroxynitriles.