Djenkolic acid

Djenkolic acid
Names
	IUPAC name (2R)-2-Amino-3-[[(2R)-2-amino-3-hydroxy-3-oxopropyl] sulfanylmethylsulfanyl]propanoic acid
	Other names Djenkolate; Jengkolic acid; S,S'-Methylenebiscysteine
Identifiers
CAS Number	498-59-9 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:6211 ;
ChemSpider	61442 ;
ECHA InfoCard	100.007.150
EC Number	207-863-4;
KEGG	C08275 ;
PubChem CID	68134;
UNII	3QHC9R0YFZ ;
CompTox Dashboard (EPA)	DTXSID80198075 ;
	InChI InChI=1S/C7H14N2O4S2/c8-4(6(10)11)1-14-3-15-2-5(9)7(12)13/h4-5H,1-3,8-9H2,(H,10,11)(H,12,13)/t4-,5-/m0/s1 Key: JMQMNWIBUCGUDO-WHFBIAKZSA-N ; InChI=1/C7H14N2O4S2/c8-4(6(10)11)1-14-3-15-2-5(9)7(12)13/h4-5H,1-3,8-9H2,(H,10,11)(H,12,13)/t4-,5-/m0/s1 Key: JMQMNWIBUCGUDO-WHFBIAKZBK;
	SMILES O=C(O)[C@@H](N)CSCSC[C@H](N)C(=O)O;
Properties
Chemical formula	C7H14N2O4S2
Molar mass	254.33 g/mol
Solubility in water	1.02 g L−1 (at 30±0.5°C)
	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

Djenkolic acid (or sometimes jengkolic acid) is a sulfur-containing non-protein amino acid naturally found in the djenkol beans of the Southeast Asian plant Archidendron jiringa. Its chemical structure is similar to cystine but contains a methylene (single carbon) unit in between the two sulfur atoms. There is about 20 grams of djenkolic acid per kilogram of dry djenkol beans, and it has also been reported in smaller amounts in the seeds of other leguminous plants such as Leucaena esculenta (2.2 g/kg) and Pithecolobium ondulatum (2.8 g/kg).