{"product_id":"yk-11","title":"YK-11","description":"\u003cp\u003e\u003cstrong\u003eProduct Name:\u003c\/strong\u003e YK-11\u003cbr\u003e\u003cstrong\u003eForm:\u003c\/strong\u003e Liquid Solution (30mL)\u003cbr\u003e\u003cstrong\u003eConcentration:\u003c\/strong\u003e 10mg\/mL\u003cbr\u003e\u003cstrong\u003ePurity:\u003c\/strong\u003e ≥ 98% (HPLC Verified)\u003c\/p\u003e\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eYK-11 is a synthetic steroidal compound that functions as both a selective androgen receptor modulator and a myostatin inhibitor, making it unique among research compounds in this class. Structurally based on the 19-Nor steroid backbone, YK-11 acts as a partial agonist at the androgen receptor whilst simultaneously inducing the expression of follistatin, a natural antagonist of myostatin. Myostatin is a negative regulator of muscle growth, and its inhibition has been shown to produce dramatic increases in muscle mass in preclinical models. Research published in Biological and Pharmaceutical Bulletin demonstrated that YK-11 induced myogenic differentiation in C2C1 cells through AR-dependent induction of follistatin expression. This dual mechanism of AR activation combined with myostatin inhibition represents a novel approach in muscle biology research. This product is provided exclusively for scientific research and laboratory use.\u003c\/p\u003e\u003ch3\u003eStorage \u0026amp; Handling\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eStore at room temperature (15–25°C) in a cool, dry place\u003c\/li\u003e\n\u003cli\u003eKeep away from direct sunlight and heat sources\u003c\/li\u003e\n\u003cli\u003eEnsure the cap is tightly sealed after each use\u003c\/li\u003e\n\u003cli\u003eDo not refrigerate or freeze liquid solutions unless specified\u003c\/li\u003e\n\u003cli\u003eShelf life: 24 months from date of manufacture when stored correctly\u003c\/li\u003e\n\u003cli\u003eKeep out of reach of children and untrained personnel\u003c\/li\u003e\n\u003cli\u003eHandle with appropriate laboratory safety equipment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUsage Guidelines\u003c\/h3\u003e\u003cp\u003eThis product is supplied as a precisely dosed liquid solution for convenient and accurate measurement in research applications. Use calibrated measuring equipment (oral syringe or graduated pipette) for precise dosing. Refer to the included Certificate of Analysis for batch-specific purity and identity data.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDisclaimer:\u003c\/strong\u003e This product is intended for research and laboratory use only. It is not a dietary supplement, food product, or medicine. Not intended for human consumption. All purchasers must confirm they are acquiring this product for legitimate research purposes only. Product imagery is for illustrative purposes only and actual product packaging and branding may vary. All products are verified to ≥98% purity via HPLC analysis.\u003c\/p\u003e","brand":"SARMS UK","offers":[{"title":"Default","offer_id":57286194889039,"sku":"SARM-YK11","price":54.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/8598\/5871\/files\/YK-11_ff1a6b6f-a749-4652-91ce-6c64094eabe2.png?v=1774086522","url":"https:\/\/sarmsuk.com\/products\/yk-11","provider":"SARMs UK","version":"1.0","type":"link"}