Y134 Research Standard
Y134 is a synthetic small-molecule selective estrogen receptor modulator (SERM) structurally related to the benzothiophene derivative Raloxifene. Engineered for high selectivity for the estrogen receptor α (ERα) over estrogen receptor β (ERβ), Y134 serves as a precise tool for investigating estrogen signaling, receptor pharmacology, and hormone-dependent cellular pathways. By optimizing the scaffold shared with Raloxifene analogs, Y134 provides enhanced ERα selectivity, allowing researchers to study tissue-specific modulation—acting as an agonist in bone tissue and an antagonist in reproductive tissues—without the broad cross-reactivity often associated with earlier generation SERMs.
Technical Specifications
| Property | Specification |
| Product Name | Y134 |
| CAS Number | 849662-80-2 |
| Chemical Formula | C28H28N2O3S |
| Molecular Weight | 472.60 g/mol |
| Chemical Class | Selective Estrogen Receptor Modulator (SERM) |
| Physical Appearance | Yellow to off-white solid |
| Solubility | Soluble in DMSO and ethanol |
Mechanism of Action & Research Context
Y134 is utilized in experimental settings to differentiate between ERα and ERβ signaling pathways, building upon the structural framework of established benzothiophene-class SERMs like Raloxifene.
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ERα Selectivity: While structurally related to Raloxifene, Y134 is optimized to demonstrate marked affinity for ERα relative to ERβ. This selectivity allows investigators to isolate ERα-dependent gene transcription and cellular responses in a controlled laboratory environment.
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Tissue-Specific Modulation: Y134 exhibits dual-action pharmacology; it promotes estrogen-like signaling in bone tissue models while inhibiting estrogen-stimulated cellular proliferation in reproductive tissue models.
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Transcriptional Regulation: The compound modulates estrogen-dependent gene expression, acting as a critical probe for studying hormone-dependent pathway activation and receptor-ligand interactions.
Research Applications
Y134 is a specialized reagent essential for modern endocrinology and oncology research.
Primary fields of in vitro laboratory investigation include:
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Estrogen Receptor Pharmacology: Analyzing the binding affinity and functional modulation of ERα in isolated signaling systems.
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Breast Cancer Proliferation Models: Evaluating the inhibitory effects of Y134 on estrogen-stimulated cellular growth in ER-positive cancer cell lines.
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Bone Density Research: Investigating agonist-like activity in bone tissue and its potential effects on pathways governing bone homeostasis.
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Structure-Activity Relationship (SAR) Studies: Utilizing Y134 as a structural reference to evaluate the efficacy and binding potential of novel SERMs derived from the benzothiophene scaffold.
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Hormone-Dependent Gene Expression: Mapping downstream gene regulatory changes following specific ERα modulation.
Storage & Handling Guidelines
To maintain the chemical stability and experimental reliability of the compound:
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Storage Environment: Store in a cool, dry place. Maintain the container at -20°C for long-term stability.
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Environmental Control: Protect strictly from light and moisture to prevent chemical degradation.
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Handling: Utilize standard laboratory safety practices for synthetic small molecules. Allow the container to equilibrate to room temperature before opening to minimize condensation.
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Aseptic Technique: Ensure the use of sterile laboratory tools and maintain an organized, clean workspace to prevent contamination.
Research Use Disclaimer
Research Use Only Disclaimer: This product is developed and distributed strictly as a Research Use Only (RUO) laboratory reference chemical intended exclusively for non-clinical analytical and scientific investigation. It is not an FDA-approved drug, medical treatment, dietary supplement, or food ingredient, and is strictly prohibited for human or animal consumption. Kimera Chems supplies this high-purity research material solely to qualified institutions and professional investigators for authorized laboratory research.
| CAS Number | 849662-80-2 |
| Other Names | Y 134; Y134; Y-134; Raloxifene Analog |
| IUPAC Name | 6-Hydroxy-2-(4-hydroxyphenyl)benzo[b]thien-3-yl]-[4-[4-(1-methylethyl)-1-piperazinyl]phenyl]methanone |
| Molecular Formula | C28H28N2O3S |
| Molecular Weight | 472.6 g/mol |
| Liquid Concentration And Solution | 20mg/ml (PEG400,DMSO) |
| Aliquot Concentration And Solution | NA |




