LGD-4033 (10mg per ml x 30ml)

LGD-4033 (commonly referred to as “Ligandrol”) is a nonsteroidal small-molecule compound described in the scientific literature as a selective androgen receptor modulator (SARM). In research contexts, SARMs are investigated for tissue-selective modulation of the androgen receptor (AR), with the goal of studying anabolic signaling in muscle and bone while characterizing androgenic effects in other tissues. LGD-4033 has been examined in preclinical and controlled-study settings for AR binding activity, pharmacodynamic biomarker changes, and effects on lean mass–related endpoints, alongside safety and tolerability signals within study constraints. It is not broadly established as safe or effective for general human use outside approved medical contexts.

RESEARCH APPLICATIONS (Preclinical / Mechanistic)

Scientific investigations have explored LGD-4033 and related SARMs for:

• Androgen receptor binding affinity and selectivity assays
• AR transcriptional activity (reporter assays) and co-regulator recruitment research
• Tissue-selective AR signaling studies (muscle vs. prostate model comparisons)
• Myogenesis and skeletal muscle protein turnover pathway research (cell/animal models)
• Bone biology studies (osteoblast/osteoclast signaling, bone turnover markers in models)
• Comparative pharmacology vs. testosterone/DHT and other AR ligands
• Endocrine feedback investigations (HPG axis modulation in models/controlled settings)
• ADME/PK characterization (absorption, distribution, metabolism, clearance in models)
• Safety pharmacology and toxicology screening (hepatic markers, lipids, CV signals)
• Anti-doping analytical method development (metabolite identification; detection windows)

MECHANISM OF ACTION (Research Context)

LGD-4033 is generally characterized as an androgen receptor ligand:

• Primary target: Androgen receptor (AR)
• Putative action: AR agonism with a “selective” or tissue-biased profile in some experimental systems
• Downstream effects studied: AR-driven transcriptional programs associated with muscle maintenance, nitrogen balance, and bone remodeling pathways
• Selectivity concept: Differential tissue exposure and co-regulator recruitment may contribute to distinct signaling profiles vs. endogenous androgens in models

QUALITY / IDENTITY VERIFICATION (Analytical)

For research-grade chemical identity confirmation and documentation, common analytical approaches include:

• LC‑MS/HRMS for molecular ion confirmation and impurity profiling
• NMR (¹H/¹³C) for structural confirmation where feasible
• HPLC/UPLC assay for purity and related substances
• Residual solvent analysis (GC) where applicable
• Water content testing where relevant (e.g., Karl Fischer)
• Stability testing under specified storage conditions (temperature/light/humidity)
• Batch documentation and traceability (lot ID, COA linkage, handling logs)