≥98% (HPLC)

ethyl 6-2-(4,4-dimethylthiochroman-6-yl)ethynyl nicotinate, AGN-190168, 6-(3,4-Dihydro-4,4-dimethyl-2H-1-benzothiopyran-6-yl)ethynyl-3-pyridinecarboxylic acid ethyl ester
Empirical Formula (Hill Notation):
Número de CAS:
Peso molecular:
En este momento no podemos mostrarle ni los precios ni la disponibilidad


≥98% (HPLC)




white to very faintly yellow


DMSO: >15 mg/mL



storage temp.




InChI key



10, 50 mg in glass bottle

Biochem/physiol Actions

Tazarotene induces the expression of tazarotene-induced gene 3 (TIG3), a tumor suppressor gene. It is a prodrug of tazarotenic acid, which specifically activates RARb and RARg, only weakly activates RARa, and is inactive at retinoid X receptors (RXRs). In psoriasis, tazarotene normalizes abnormal keratinocyte differentiation and reduces their hyperproliferation.

Features and Benefits

This compound is a featured product for Gene Regulation research. Click here to discover more featured Gene Regulation products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.
This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.
This compound was developed by Allergan. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Legal Information

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC


Health hazard





NONH for all modes of transport

WGK Germany


Flash Point F

Not applicable

Flash Point C

Not applicable

Certificado de Análisis
Igor Maricic et al.
Journal of immunology (Baltimore, Md. : 1950), 201(10), 3017-3035 (2018-10-17)
Innate immune mechanisms play an important role in inflammatory chronic liver diseases. In this study, we investigated the role of type I or invariant NKT (iNKT) cell subsets in the progression of nonalcoholic steatohepatitis (NASH). We used α-galactosylceramide/CD1d tetramers and...
A Menter
Journal of the American Academy of Dermatology, 43(2 Pt 3), S31-S35 (2000-07-18)
The pharmacokinetic profile of tazarotene helps to ensure that systemic exposure to the drug and its metabolites is minimal. First, percutaneous penetration is limited, with less than 6% of the applied drug being absorbed into the bloodstream. Second, tazarotene is...
Lyn C Guenther
American journal of clinical dermatology, 4(3), 197-202 (2003-03-12)
Tazarotene is a receptor-selective retinoid, which is efficacious in the treatment of patients with psoriasis, acne vulgaris, and photoaging. It normalizes keratinocyte differentiation, reverses keratinocyte hyperproliferation, and has anti-inflammatory effects. Clinical studies have shown that tazarotene 0.1% gel has greater...
Essam Bakr Abd El-Aal et al.
The Journal of dermatological treatment, 30(3), 277-282 (2018-08-08)
Onychomycosis is a chronic fungal infection of the nails, and the treatment has been proven to be a challenge to healthcare professionals. To evaluate the efficacy of fractional carbon dioxide laser-assisted delivery of topical tazarotene versus topical tioconazole in the...
D D Tang-Liu et al.
Clinical pharmacokinetics, 37(4), 273-287 (1999-12-20)
Tazarotene (AGN 190168) is a new acetylenic retinoid which is effective for the topical treatment of patients with stable plaque psoriasis and mild to moderate acne vulgaris. Topical gel application provides direct delivery of tazarotene into the skin. At 10...
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