4-Amino-3-hydroxybutanoic acid

AHBA · 4-amino-3-hydroxy-butyricaci · 3-Hydroxy-4-amino-butyric acid · C03678 · buksamin · gabomade · gamibetal · beta-oxy-gaba

Identifiers & Physical Properties

CAS No.	352-21-6
Molecular formula	C4H9NO3
Average molar mass	119.12 g/mol
Monoisotopic mass	119.05824315 g/mol
SMILES	NCC(O)CC(=O)O
InChIKey	YQGDEPYYFWUPGO-UHFFFAOYSA-N
PubChem CID	2149
ChEMBL	CHEMBL93515
ChEBI	CHEBI:16080
EC No.	206-518-5
DTXSID	DTXSID1045877

XLogP	-4.1
Topological polar surface area	83.6
Hydrogen bond donors	3
Hydrogen bond acceptors	4
Rotatable bonds	3
Heavy atoms	8
Formal charge	0
Complexity	83.4
Melting point	157-161°C
Boiling point	220.63°C (rough estimate)
Density	1.3492 (rough estimate)
Refractive index	1.4540 (estimate)
CAS DataBase Reference	352-21-6(CAS DataBase Reference)
FDA UNII	1ZHM019FLD
EPA Substance Registry System	Butanoic acid, 4-amino-3-hydroxy-(352-21-6)
GHS pictogram	GHS07
Signal word	Danger
GHS hazard statements	H335-H315-H319
GHS precautionary statements	P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362

GHS classification	WarningH315 (97.6%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 42 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.DangerH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
Hazard Classes and Categories	Skin Irrit. 2 (97.6%)
Signal word	Danger
GHS pictogram	GHS07
GHS hazard statements	H335-H315-H319
GHS precautionary statements	P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362

HuagongsheHuagongshe Chemistry Print Report · For research reference only

HCID 2149Generated: October 27, 2026

AHBA · 4-amino-3-hydroxy-butyricaci · 3-Hydroxy-4-amino-butyric acid · C03678 · buksamin · gabomade · gamibetal · beta-oxy-gaba

CAS No.	352-21-6
Molecular formula	C4H9NO3
Average molar mass	119.12 g/mol
Monoisotopic mass	119.05824315 g/mol
SMILES	NCC(O)CC(=O)O
InChIKey	YQGDEPYYFWUPGO-UHFFFAOYSA-N
PubChem CID	2149
ChEMBL	CHEMBL93515
ChEBI	CHEBI:16080
EC No.	206-518-5
DTXSID	DTXSID1045877

XLogP	-4.1
Topological polar surface area	83.6
Hydrogen bond donors	3
Hydrogen bond acceptors	4
Rotatable bonds	3
Heavy atoms	8
Formal charge	0
Complexity	83.4
Melting point	157-161°C
Boiling point	220.63°C (rough estimate)
Density	1.3492 (rough estimate)
Refractive index	1.4540 (estimate)
CAS DataBase Reference	352-21-6(CAS DataBase Reference)
FDA UNII	1ZHM019FLD
EPA Substance Registry System	Butanoic acid, 4-amino-3-hydroxy-(352-21-6)
GHS pictogram	GHS07
Signal word	Danger
GHS hazard statements	H335-H315-H319
GHS precautionary statements	P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362

GHS classification	WarningH315 (97.6%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 42 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.DangerH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
Hazard Classes and Categories	Skin Irrit. 2 (97.6%)
Signal word	Danger
GHS pictogram	GHS07
GHS hazard statements	H335-H315-H319
GHS precautionary statements	P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362