1-Aminoethanol

Not to be confused with 2-aminoethanol.

1-Aminoethanol is an organic compound with the formula CH₃CH(NH₂)OH. It is classified as an alkanolamine. Specifically, it is a structural isomer of 2-aminoethanol (ethanolamine). These two compounds differ in the position of the amino group. Since the central carbon atom in 1-aminoethanol has four different substituents, the compound has two stereoisomers. Unlike 2-aminoethanol, which is of considerable importance in commerce, 1-aminoethanol is not encountered as a pure material and is mainly of theoretical interest.

1-Aminoethanol

Names
Preferred IUPAC name 1-Aminoethan-1-ol
Other names 1-Aminoethanol Acetaldehyde ammonia
Identifiers
CAS Number	75-39-8 Y
3D model (JSmol)	Interactive image
ChemSpider	455852
ECHA InfoCard	100.000.790
EC Number	200-868-2
PubChem CID	522583
UNII	4J67Y8SM0K Y
CompTox Dashboard (EPA)	DTXSID60996495
InChI InChI=1S/C2H7NO/c1-2(3)4/h2,4H,3H2,1H3 Key: UJPKMTDFFUTLGM-UHFFFAOYSA-N
SMILES CC(N)O
Properties
Chemical formula	C2H7NO
Molar mass	61.084 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

1-Aminoethanol exists in a solution of acetaldehyde and aqueous ammonia.^[1]

1-Aminoethanol is suggested as intermediate in Strecker reaction of alanine synthesis.^[2]

1-Aminoethanol was first prepared in 1833 by the German chemist Johann Wolfgang Döbereiner; its empirical formula was first determined by the German chemist Justus von Liebig in 1835.^[3] The structure of 1-aminoethanol remained unproven until 1877, when the German-Italian chemist Robert Schiff showed that the structure was CH₃CH(OH)NH₂.^[4]