Here are a few useful tools for the peptide researcher that may be helpful in your research:
CALCULATORS
Peptide molecular weight and properties calculator: https://cem.com/en/peptide-calculator
Peptide properties calculator (including extinction coefficient): http://biotools.nubic.northwestern.edu/proteincalc.html
PK Calculators: https://drughunter.com/resource/practical-pk-calculators/
Calculate project timing: https://datewheel.net/desktop/en/index.html
STRUCTURES
Collection of 3D structure generators: https://www.vls3d.com/links/chemoinformatics/3d-structure-generator
Pepdraw: https://pepdraw.com/
SWISS-MODEL is a fully automated protein structure homology-modelling server: https://swissmodel.expasy.org/
GLOSSARIES
FDA Glossary of terms related to clinical trials: https://www.fda.gov/patients/clinical-trials-what-patients-need-know/glossary-terms
FDA Abbreviations and Acronyms searchable database: https://www.accessdata.fda.gov/scripts/cder/acronyms/index.cfm
Generic drug name stems: https://druginfo.nlm.nih.gov/drugportal/jsp/drugportal/DrugNameGenericStems.jsp
DRUG DATABASES
FDA Approved Drug Database: https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=reportsSearch.process
The European Medicines Agency (EMA) EudraGMDP database: https://www.ema.europa.eu/en/human-regulatory/research-development/compliance/good-manufacturing-practice/eudragmdp-database
PepTherDia (searchable list of approved peptide drugs and diagnostic agents): http://peptherdia.herokuapp.com/
LITERATURE
PubMed Central® (PMC) is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health’s National Library of Medicine (NIH/NLM): https://www.ncbi.nlm.nih.gov/pmc
MISCELLANEOUS
Abbreviated New Drug Application (ANDA): https://www.fda.gov/drugs/types-applications/abbreviated-new-drug-application-anda