RESEARCH ACCESS

Confirm you are eligible to enter

Advanced Sequence supplies research chemicals for in-vitro laboratory use by qualified professionals. To continue, confirm that you are at least 21 years of age and that you are accessing this site solely for legitimate laboratory research. Nothing on this site is offered for human or veterinary use.

Research use only. By entering you agree these materials are for laboratory research and not for human or veterinary use. Declining will take you to wada-ama.org.

Sequence Science

Notes on peptide sequence, structure, and the language of residues.

Jul 10, 2026

Amino-Acid Sequence Notation: Reading Peptide Codes

A peptide sequence is a compact code with rules. This note covers the residue alphabets, reading direction, and the limits of what a sequence string can tell you.

READ NOTE →

Jul 10, 2026

Lyophilization and Reconstitution Chemistry

Freeze-drying is a controlled removal of water in stages, and rehydration reverses it. This note covers the chemistry in general terms, without preparation amounts.

READ NOTE →

Jul 10, 2026

Peptide Stability: Degradation Pathways and Storage

Peptides degrade by a handful of well-characterised chemical routes. This note maps the main pathways to the storage conditions that slow them.

READ NOTE →