Purity Analysis¶
HPLC Purity and Impurity Profiling¶
Purity Reporting¶
Purity is reported as the area percentage of the main peak at 214 nm UV detection.
Impurity Types¶
| Impurity Type | Source | HPLC Profile |
|---|---|---|
| Deletion sequences | Incomplete coupling | Earlier eluting |
| Truncated peptides | Failed deprotection | Earlier eluting |
| D-isomers | Racemization | Co-eluting or shoulder |
| Dimer/aggregates | Over-coupling | Later eluting |
| Scavenger residues | Cleavage | Early eluting |
Acceptance Criteria¶
| Application | Purity Standard |
|---|---|
| Research use | ≥95% |
| In vivo studies | ≥98% |
| Clinical trials | ≥98% (GMP) |
| Diagnostic use | ≥98% |
| Custom requirement | Per specification |
- HPLC Purity and Impurity Profiling — Review the section above for key parameters, methods, and quality criteria.
- Purity Reporting — Review the section above for key parameters, methods, and quality criteria.
- Acceptance Criteria — Review the section above for key parameters, methods, and quality criteria.
Key Takeaways¶
- HPLC Purity and Impurity Profiling — Review the section above for key parameters, methods, and quality criteria.
- Purity Reporting — Review the section above for key parameters, methods, and quality criteria.
- Impurity Types — Review the section above for key parameters, methods, and quality criteria.
- Acceptance Criteria — Review the section above for key parameters, methods, and quality criteria.
🔗 Related: HPLC Analysis | LC-MS Testing | COA Understanding