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2D Structure
Also known as: 722533-56-4, Rad1901, Elacestrant [inn], Elacestrant [usan], Rad-1901, Er-306323
Molecular Formula
C30H38N2O2
Molecular Weight
458.6  g/mol
InChI Key
SIFNOOUKXBRGGB-AREMUKBSSA-N
FDA UNII
FM6A2627A8

Elacestrant is an orally available, selective estrogen receptor degrader (SERD) and selective estrogen receptor modulator (SERM), with potential antineoplastic and estrogen-like activities. Upon oral administration of higher doses of elacestrant, this agent acts as a SERD, which binds to the estrogen receptor (ER) and induces a conformational change that results in the degradation of the receptor. This may inhibit the growth and survival of ER-expressing cancer cells. At lower doses of this agent, RAD1901 acts as a SERM and has estrogen-like effects in certain tissues, which can both reduce hot flashes and protect against bone loss. In addition, elacestrant is able to cross the blood-brain barrier (BBB).
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
(6R)-6-[2-[ethyl-[[4-[2-(ethylamino)ethyl]phenyl]methyl]amino]-4-methoxyphenyl]-5,6,7,8-tetrahydronaphthalen-2-ol
2.1.2 InChI
InChI=1S/C30H38N2O2/c1-4-31-17-16-22-6-8-23(9-7-22)21-32(5-2)30-20-28(34-3)14-15-29(30)26-11-10-25-19-27(33)13-12-24(25)18-26/h6-9,12-15,19-20,26,31,33H,4-5,10-11,16-18,21H2,1-3H3/t26-/m1/s1
2.1.3 InChI Key
SIFNOOUKXBRGGB-AREMUKBSSA-N
2.1.4 Canonical SMILES
CCNCCC1=CC=C(C=C1)CN(CC)C2=C(C=CC(=C2)OC)C3CCC4=C(C3)C=CC(=C4)O
2.1.5 Isomeric SMILES
CCNCCC1=CC=C(C=C1)CN(CC)C2=C(C=CC(=C2)OC)[C@@H]3CCC4=C(C3)C=CC(=C4)O
2.2 Other Identifiers
2.2.1 UNII
FM6A2627A8
2.3 Synonyms
2.3.1 MeSH Synonyms

1. (6r)-6-(2-(ethyl((4-(2-(ethylamino)ethyl)phenyl)methyl)amino)-4-methoxyphenyl)-5,6,7,8-tetrahydronaphthalen-2-ol

2.3.2 Depositor-Supplied Synonyms

1. 722533-56-4

2. Rad1901

3. Elacestrant [inn]

4. Elacestrant [usan]

5. Rad-1901

6. Er-306323

7. Fm6a2627a8

8. (6r)-6-[2-[ethyl-[[4-[2-(ethylamino)ethyl]phenyl]methyl]amino]-4-methoxyphenyl]-5,6,7,8-tetrahydronaphthalen-2-ol

9. (6r)-6-{2-[ethyl({4-[2-(ethylamino)ethyl]phenyl}methyl)amino]-4-methoxyphenyl}-5,6,7,8-tetrahydronaphthalen-2-ol

10. (2r)-2-(2-(ethyl-((4-(2-(ethylamino)ethyl)phenyl)methyl)amino)-4-methoxy-phenyl)tetralin-6-ol

11. (6r)-6-(2-(ethyl((4-(2- (ethylamino)ethyl)phenyl)methyl)amino)-4-methoxyphenyl)- 5,6,7,8-tetrahydronaphthalen-2-ol

12. 2-naphthalenol, 6-(2-(ethyl((4-(2-(ethylamino)ethyl)phenyl)methyl)amino)-4-methoxyphenyl)-5,6,7,8-tetrahydro-, (6r)-

13. Elacestrant (usan/inn)

14. Elacestrant [usan:inn]

15. Elacestrant [who-dd]

16. Schembl229431

17. Unii-fm6a2627a8

18. Chembl4297509

19. Bdbm349630

20. Dtxsid901045846

21. Glxc-26208

22. Ex-a5070

23. Us10208011, Compound Rad-

24. Mfcd30532693

25. Who 10247

26. Cs-6306

27. Db06374

28. Hy-19822

29. D11671

30. Q27278069

31. (r)-6-(2-(ethyl(4-(2-(ethylamino)ethyl)benzyl)amino)-4-methoxyphenyl)-5,6,7,8-tetrahydronaphthalen-2-ol

32. I0v

2.4 Create Date
2008-01-14
3 Chemical and Physical Properties
Molecular Weight 458.6 g/mol
Molecular Formula C30H38N2O2
XLogP36.3
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count4
Rotatable Bond Count10
Exact Mass458.293328459 g/mol
Monoisotopic Mass458.293328459 g/mol
Topological Polar Surface Area44.7 Ų
Heavy Atom Count34
Formal Charge0
Complexity578
Isotope Atom Count0
Defined Atom Stereocenter Count1
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Drug Indication

Investigated for use/treatment in menopause and female hormonal deficiencies/abnormalities.


5 Pharmacology and Biochemistry
5.1 Mechanism of Action

RAD1901 is a novel selective estrogen receptor modulator(SERM). SERMs are small molecules that bind to and selectively modulate estrogen receptors. These molecules have the ability to stimulate or block estrogen's activity in different types of tissue, functioning as estrogen receptor agonists in some tissues and as estrogen receptor antagonists in others. RAD1901 has potential to reduce vasomotor symptoms, along with a simultaneous bone-protective effect, without stimulating breast or uterine tissues. RAD1901 is distinctive from other SERMs in its unique biological profile, combined with its significant ability to penetrate the blood-brain barrier, which enables RAD1901 to function as an estrogen agonist within the central nervous system and thereby relieve hot flashes.