YK-11 Research Reference at Chemyo: Solution and Powder
This is the Chemyo research reference for YK-11: what the compound is, its molecular identity, the formats in stock and the published batch testing. YK-11 is supplied for research use only; nothing on this page is dosing, administration or clinical guidance.
What is YK-11?
YK-11 is a steroidal research compound first reported by Yuichiro Kanno and colleagues in 2011. It is built on a 5α-dihydrotestosterone backbone and was described as a partial agonist of the androgen receptor that does not trigger the full receptor conformational change seen with complete agonists.
Interest in YK-11 comes mainly from a 2013 cell-culture study in C2C12 myoblasts, which reported that it increased expression of follistatin, a natural inhibitor of myostatin. Because the evidence is almost entirely in vitro, and because its steroidal structure separates it from non-steroidal SARMs, YK-11 is best viewed as an early-stage research tool.
Molecular identity
| CAS number | 1370003-76-1 |
| Molecular formula | C25H34O6 |
| Molar mass | 430.5 g/mol |
| Synonyms | YK11, YK 11 |
| Research class | Steroidal SARM (partial androgen receptor agonist) research compound |
Where to buy YK-11 for research
Searches for YK 11 for sale turn up many listings with no batch data. At Chemyo every lot of YK-11 below has its identity, purity and, for solutions, concentration results published, so you can check the material before you order it.
- YK11 | YK-11 SARM Solution 10mg/ml – 50ml
Liquid solution · batch FTIR and HPLC report plus concentration assay
- YK11 SARM Powder – 1g
Research powder · batch FTIR and HPLC report
- YK-11 and MK-677 Value Pack
Value pack · batch FTIR and HPLC report
- YK-11 and GW501516 Value Pack
Value pack · batch FTIR and HPLC report
Browse all SARM solutions, research powders and value packs.
Quality control
Every batch is independently tested: FTIR for identity, HPLC for purity and, for solutions, a separate concentration assay. Reports are listed by batch number in the Chemyo lab reports library, and our quality control process explains each step. To check a certificate yourself, see how to read a SARM COA.
YK-11 FAQ
Is YK-11 a SARM or a steroid?
Structurally it is a steroid derived from DHT, but it was described as a selective, partial androgen receptor agonist, which is why it is often filed with SARMs.
Is YK-11 a myostatin inhibitor?
Not directly. Cell studies reported that it raises follistatin, which in turn inhibits myostatin; that indirect effect is the basis of the label.
How much research exists on YK-11?
Very little: a handful of in vitro and animal studies and no human clinical trials.
Which YK-11 formats does Chemyo offer?
A 10 mg/ml solution in 50 ml, a 1 g powder and value packs with MK-677 or GW-501516.
Related research references
Compliance: all Chemyo products are supplied for laboratory research only and are not for human or veterinary use. Read the terms and conditions before ordering.