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SML2092

Sigma-Aldrich

R115866

≥98% (HPLC)

Synonym(s):

(B)-N-[4-[2-Ethyl-1-(1H-1,2,4-triazol-1-yl)butyl]phenyl]-2-benzothiazolamine, (R)-N-[4-[2-Ethyl-1-(1H-1,2,4-triazol(-1-yl)butyl]phenyl]-2-benzothiazolamine, TLZ, Talarozole

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About This Item

Empirical Formula (Hill Notation):
C21H23N5S
CAS Number:
870093-23-5
Molecular Weight:
377.51
MDL number:
MFCD13194908
UNSPSC Code:
12352200
NACRES:
NA.77

Assay

≥98% (HPLC)

form

film

color

colorless

solubility

DMSO: 2 mg/mL, clear

storage temp.

2-8°C

InChI

1S/C21H23N5S/c1-3-15(4-2)20(26-14-22-13-23-26)16-9-11-17(12-10-16)24-21-25-18-7-5-6-8-19(18)27-21/h5-15,20H,3-4H2,1-2H3,(H,24,25)/t20-/m1/s1

InChI key

SNFYYXUGUBUECJ-HXUWFJFHSA-N

Biochem/physiol Actions

R115866 (Talarozole) is an orally active all-trans retinoic acid (RA) metabolism blocking agent (RAMBA; IC50 = 4 nM against RA metablism in yeast microsomes expressing human CYP26) with much reduced or little potency against CYP19 (aromatase), CYP17 (17,20-lyase), CYP2C11, CYP3A, and CYP2A1 (IC50 from 1.2 to >10 μM). Plasma and tissue RA upregulation via R115866 oral treatment exhibits in vivo efficacy in several retinoid-responsive rodent models, including vaginal keratinization suppression (ED50 = 1.0 mg/kg/day vs. 5.1 mg/kg/day with RA in rats), pinnal hyperplasia induction (ear epidermis thickness = 35.5 μm with 2.5 mg/kg/day R115866 vs. 16.5 μm in control mice), conversion of caudal para- to ortho-keratosis (90% with 1.25 mg/kg/day R115866 vs. 30.3% in control mice). Comparing to liarozole, R115866 is CYP26-selective and does not inhibit CYP-mediated biosynthesis of adrenal and gonadal steroid hormones.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Sasmita Tripathy et al.
Molecular pharmacology, 89(5), 560-574 (2016-02-28)
All-trans-retinoic acid (atRA) is the active metabolite of vitamin A. The liver is the main storage organ of vitamin A, but activation of the retinoic acid receptors (RARs) in mouse liver and in human liver cell lines has also been
Philippe Diaz et al.
Journal of medicinal chemistry, 59(6), 2579-2595 (2016-02-27)
Cytochrome P450 CYP26 enzymes are responsible for all-trans-retinoic acid (atRA) clearance. Inhibition of CYP26 enzymes will increase endogenous atRA concentrations and is an attractive therapeutic target. However, the selectivity and potency of the existing atRA metabolism inhibitors toward CYP26A1 and
Richard W Naylor et al.
Nature communications, 7, 12197-12197 (2016-07-14)
Despite the fundamental importance of patterning along the dorsal-ventral (DV) and anterior-posterior (AP) axes during embryogenesis, uncertainty exists in the orientation of these axes for the mesoderm. Here we examine the origin and formation of the zebrafish kidney, a ventrolateral
Salvador Alonso et al.
The Journal of clinical investigation, 126(12), 4460-4468 (2016-10-25)
Interactions between multiple myeloma (MM) cells and the BM microenvironment play a critical role in bortezomib (BTZ) resistance. However, the mechanisms involved in these interactions are not completely understood. We previously showed that expression of CYP26 in BM stromal cells
João E Carvalho et al.
BMC evolutionary biology, 17(1), 24-24 (2017-01-21)
During embryogenesis, tight regulation of retinoic acid (RA) availability is fundamental for normal development. In parallel to RA synthesis, a negative feedback loop controlled by RA catabolizing enzymes of the cytochrome P450 subfamily 26 (CYP26) is crucial. In vertebrates, the
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