| Target Assessment and Strategy | Review of target biology, available structural information, binding-site characteristics, competitive landscape, and proposed chemistry routes. | Target assessment report, project plan, assay requirements, chemical strategy, and risk assessment. | Define a practical and evidence-based discovery plan. | Project initiation |
| Assay Development and Qualification | Development or optimization of biochemical, biophysical, cell-based, and binding assays; assessment of controls, reproducibility, and compound interference. | Assay protocols, control compounds, qualification data, acceptance criteria, and screening-ready assay formats. | Generate reliable biological data for compound evaluation. | Early discovery |
| Virtual Screening and Computational Chemistry | Structure-based design, ligand-based modeling, molecular docking, similarity searching, pharmacophore modeling, and compound prioritization. | Ranked compound lists, docking models, design hypotheses, property predictions, and focused library recommendations. | Reduce experimental workload and improve compound selection. | Hit discovery and optimization |
| Hit Identification | Screening of compound collections using biochemical, cellular, biophysical, fragment-based, DNA-encoded, or virtual approaches, followed by confirmation testing. | Primary screening data, confirmed hits, concentration-response curves, preliminary selectivity results, and hit-ranking summaries. | Find reproducible starting points with measurable target activity. | Hit discovery |
| Hit Confirmation and Triage | Resynthesis or procurement of representative compounds, purity confirmation, orthogonal testing, counterscreens, and removal of nonspecific or assay-interfering compounds. | Confirmed hit set, analytical data, orthogonal assay results, interference flags, and prioritized chemical series. | Separate genuine biological activity from artifacts. | Post-screening |
| Hit-to-Lead Development | Exploration of structure–activity relationships, analogue design, parallel synthesis, scaffold modification, and early assessment of potency, selectivity, and physicochemical properties. | SAR matrices, analogue compounds, potency data, selectivity profiles, and prioritized lead series. | Convert initial hits into stronger and more developable chemical matter. | Hit-to-lead |
| Lead Optimization | Iterative design and synthesis to balance potency, selectivity, solubility, permeability, metabolic stability, chemical stability, and exposure-related properties. | Optimized lead compounds, design–make–test–analyze cycles, property profiles, and candidate selection packages. | Improve the overall profile required for further preclinical development. | Lead optimization |
| Medicinal Chemistry | Design and synthesis of novel small molecules, route scouting, reaction optimization, impurity control, stereochemical evaluation, and preparation of focused compound libraries. | Compound batches, synthetic schemes, experimental procedures, characterization data, and compound inventory records. | Create and refine chemical matter that supports biological testing. | All discovery stages |
| Custom and Parallel Synthesis | Small-scale synthesis, microwave-assisted reactions, parallel chemistry, building-block selection, purification, and preparation of structurally diverse analogues. | Requested compounds, batch records, purity results, analytical files, and delivery documentation. | Accelerate compound generation for screening and SAR studies. | Hit generation to lead optimization |
| ADME and Early Developability Support | Assessment of solubility, permeability, microsomal stability, plasma stability, protein binding, metabolic liability, and selected transporter or enzyme interactions. | ADME data tables, property summaries, liability analysis, compound comparison, and optimization recommendations. | Identify development risks before resource-intensive studies. | Hit-to-lead and lead optimization |
| Analytical Chemistry and Compound Management | Purity testing, identity confirmation, LC–MS analysis, NMR characterization, sample registration, storage, reformatting, and shipment coordination. | Certificates of analysis, analytical spectra, sample inventories, plate maps, and chain-of-custody records. | Ensure that test samples are correctly identified, traceable, and fit for use. | All discovery stages |
| Project Management and Data Reporting | Work-package planning, milestone tracking, technical meetings, data review, deviation management, documentation control, and secure transfer of project results. | Progress reports, milestone reviews, electronic data packages, decision logs, and updated project plans. | Coordinate multidisciplinary work and support evidence-based decisions. | Throughout the program |