Hypoglycin A

Hypoglycin
Names
	IUPAC name 3-[(1R-2-Methylidenecyclopropyl]-L-alanine
	Systematic IUPAC name (2S)-2-Amino-3-[(1R)-2-methylidenecyclopropyl]propanoic acid
	Other names Hypoglycin A; Hypoglycine; 2-Methylenecyclopropanylalanine
Identifiers
CAS Number	156-56-9 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL1615355 ;
ChemSpider	9943349 ;
ECHA InfoCard	100.189.936
PubChem CID	11768666;
UNII	7GB7U7M282 ;
CompTox Dashboard (EPA)	DTXSID70878975 ;
	InChI InChI=1S/C7H11NO2/c1-4-2-5(4)3-6(8)7(9)10/h5-6H,1-3,8H2,(H,9,10)/t5-,6+/m1/s1 Key: OOJZCXFXPZGUBJ-RITPCOANSA-N ; InChI=1/C7H11NO2/c1-4-2-5(4)3-6(8)7(9)10/h5-6H,1-3,8H2,(H,9,10)/t5-,6+/m1/s1 Key: OOJZCXFXPZGUBJ-RITPCOANBH;
	SMILES O=C(O)[C@@H](N)C[C@@H]1C(=C)C1;
Properties
Chemical formula	C7H11NO2
Molar mass	141.170 g·mol−1
Melting point	282 °C (540 °F; 555 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

Hypoglycin A is a naturally occurring amino acid derivative found in the unripened fruit of the Ackee tree (Blighia sapida) and in the seeds of the box elder tree (Acer negundo). It is toxic if ingested, and is the causative agent of Jamaican vomiting sickness. A 2017 Lancet report established a link between the consumption of unripened lychees (containing hypoglycin A or methylenecyclopropylglycine (MCPG)) resulting in hypoglycaemia and death from acute toxic encephalopathy.