4-Hydroxyestriol

4-Hydroxyestriol
Names
	IUPAC name (8R,9S,13S,14S,16R,17R)-13-Methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,4,16,17-tetrol[1]
	Other names Estra-1,3,5(10)-triene-3,4,16α,17β-tetrol
Identifiers
CAS Number	60021-32-1 ;
3D model (JSmol)	Interactive image;
ChemSpider	168415;
PubChem CID	194095;
UNII	I8867W65UC ;
CompTox Dashboard (EPA)	DTXSID20975448 ;
	InChI InChI=1S/C18H24O4/c1-18-7-6-10-9-4-5-14(19)16(21)12(9)3-2-11(10)13(18)8-15(20)17(18)22/h4-5,10-11,13,15,17,19-22H,2-3,6-8H2,1H3/t10-,11-,13+,15-,17+,18+/m1/s1 Key: KKXSCWWODCABHQ-OZPBLJIJSA-N;
	SMILES C[C@]12CC[C@H]3[C@H]([C@@H]1C[C@H]([C@@H]2O)O)CCC4=C3C=CC(=C4O)O;
Properties
Chemical formula	C18H24O4
Molar mass	304.386 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

4-Hydroxyestriol, also known as estra-1,3,5(10)-triene-3,4,16α,17β-tetrol, is an endogenous catechol estrogen and metabolite of estriol. It has been found in pregnancy urine.[2]

References

"(16-A,17-A)-Estra-1,3,5(10)-Triene-3,4,16,17-Tetrol". National Center for Biotechnology Information. 17 December 2016. Archived from the original on 26 December 2016. Retrieved 26 December 2016. Cite journal requires |journal= (help)
Theodore Fotsis Fotsis; Paula Jervenpee; Herman Adlercreutz (13 January 2009) [1980]. "Identification of 4-Hydroxyestriol in Pregnancy Urine". The Journal of Clinical Endocrinology and Metabolism. 51 (1): 148–151. doi:10.1210/jcem-51-1-148. PMID 6892918.

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