Threonic acid

l-threonic acid
Names
	IUPAC name (2R,3S)-2,3,4-Trihydroxybutanoic acid
Identifiers
CAS Number	3909-12-4 (D/L) ; 20246-26-8 (D) ; 7306-96-9 (L) ;
3D model (JSmol)	(D): Interactive image; (L): Interactive image;
ChemSpider	133224 (D) ; 4573940 (L) ;
PubChem CID	151152 (D); 5460407 (L);
UNII	NTD0MI8XRT (D/L) ; 75B0PMW2JF (L) ;
CompTox Dashboard (EPA)	DTXSID60223339 ;
	InChI InChI=1S/C4H8O5/c5-1-2(6)3(7)4(8)9/h2-3,5-7H,1H2,(H,8,9)/t2-,3+/m0/s1 Key: JPIJQSOTBSSVTP-STHAYSLISA-N ; (D): InChI=1S/C4H8O5/c5-1-2(6)3(7)4(8)9/h2-3,5-7H,1H2,(H,8,9)/t2-,3+/m1/s1 Key: JPIJQSOTBSSVTP-GBXIJSLDSA-N;
	SMILES (D): C([C@H]([C@@H](C(=O)O)O)O)O; (L): C([C@@H]([C@H](C(=O)O)O)O)O;
Properties
Chemical formula	C4H8O5
Molar mass	136.103 g·mol−1
Conjugate base	Threonate
	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

Threonic acid is a sugar acid derived from threose. The l-isomer is a metabolite of ascorbic acid (vitamin C). One study suggested that because l-threonate inhibits DKK1 expression in vitro, it may have potential in treatment of androgenic alopecia.