Azetidine-2-carboxylic acid

Azetidine-2-carboxylic acid
Names
	IUPAC name Azetidine-2-carboxylic acid
Identifiers
CAS Number	2133-34-8 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:6198 ;
ChEMBL	ChEMBL1165239 ;
ChemSpider	15628 ;
ECHA InfoCard	100.016.693
EC Number	218-362-5;
IUPHAR/BPS	4686;
KEGG	C08267 ;
PubChem CID	16486 L-;
UNII	5GZ3E0L9ZU ;
CompTox Dashboard (EPA)	DTXSID0044020 ;
	InChI InChI=1S/C4H7NO2/c6-4(7)3-1-2-5-3/h3,5H,1-2H2,(H,6,7)/t3-/m0/s1 Key: IADUEWIQBXOCDZ-VKHMYHEASA-N ; InChI=1/C4H7NO2/c6-4(7)3-1-2-5-3/h3,5H,1-2H2,(H,6,7)/t3-/m0/s1 Key: IADUEWIQBXOCDZ-VKHMYHEABQ;
	SMILES O=C(O)[C@H]1NCC1;
Properties
Chemical formula	C4H7NO2
Molar mass	101.104 g/mol
Appearance	crystalline solid
Density	1.275 g/cm3
Melting point	215 °C (419 °F; 488 K)
Boiling point	242 °C (468 °F; 515 K)
Solubility in water	5.0 g/100 ml
Hazards
Flash point	100.1 °C (212.2 °F; 373.2 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Azetidine-2-carboxylic acid (abbreviated Aze or Azc) is a plant non-protein amino acid homologue of proline with the molecular formula C₄H₇NO₂. Aze is a heterocyclic, 4 membered ring with nitrogen as its heteroatom (an azetidine), and a carboxylic acid group substituted on one of the ring carbon atoms. The main difference between Aze and proline is the ring of Aze has four members and the ring of proline has five. Aze has the ability to act as an analog of proline and can be incorporated into proteins in place of proline.