TEI-9648

Modify Date: 2024-01-21 13:13:55

TEI-9648 Structure
TEI-9648 structure
Common Name TEI-9648
CAS Number 173388-21-1 Molecular Weight 426.58800
Density N/A Boiling Point 618.492ºC at 760 mmHg
Molecular Formula C27H38O4 Melting Point N/A
MSDS N/A Flash Point 204.543ºC

 Use of TEI-9648


TEI-9648, a Vitamin D3 Lactone analogue, is a potent and specific vitamin D receptor (VDR) antagonist. TEI-9648 inhibits VDR/VDRE-mediated genomic actions of 1α,25(OH)2D3. TEI-9648 also inhibits HL-60 cell differentiation induced by of 1α,25(OH)2D3. TEI-9648 has the potential for bone metabolism research[1][2].

 Names

Name (1S,3R,5Z,7E,23R)-1,3-Dihydroxy-23,26-epoxy-9,10-secocholesta-5,7 ,10,25(27)-tetraen-26-one

 TEI-9648 Biological Activity

Description TEI-9648, a Vitamin D3 Lactone analogue, is a potent and specific vitamin D receptor (VDR) antagonist. TEI-9648 inhibits VDR/VDRE-mediated genomic actions of 1α,25(OH)2D3. TEI-9648 also inhibits HL-60 cell differentiation induced by of 1α,25(OH)2D3. TEI-9648 has the potential for bone metabolism research[1][2].
Related Catalog
In Vitro TEI-9648 (10-1000 nM) dose-dependently blocks the reciprocal changes of CD11b and CD71 expression associated with HL-60 cell differentiation induced by 1α,25(OH)2D3[1]. TEI-9648 has consistently weaker suppressive effect than TEI-9647[1]. TEI-9648 can not induce cell differentiation even after treatment at 1 μM in HL-60 cell[1]. TEI-9648 alone can not induce activation of NBT-reducing activity or α-NB esterase activity. In contrast, TEI-9648 markedly suppresses the up-regulation induced by 1α,25(OH)2D3 (0.1 nM) in HL-60 cells[1].
References

[1]. Miura D, et al. Antagonistic action of novel 1α,25-dihydroxyvitamin D3-26, 23-lactone analogs on differentiation of human leukemia cells (HL-60) induced by 1α,25-dihydroxyvitamin D3. J Biol Chem. 1999 Jun 4;274(23):16392-9.

[2]. Kazuya Takenouchi, et al. Synthesis and structure-activity relationships of TEI-9647 derivatives as Vitamin D3 antagonists. J Steroid Biochem Mol Biol. 2004 May;89-90(1-5):31-4.

 Chemical & Physical Properties

Boiling Point 618.492ºC at 760 mmHg
Molecular Formula C27H38O4
Molecular Weight 426.58800
Flash Point 204.543ºC
Exact Mass 426.27700
PSA 66.76000
LogP 5.02530
Vapour Pressure 0mmHg at 25°C
Index of Refraction 1.567
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