# Page Not Found

The URL `patent-annotation/chemistry-annotations` does not exist.

You might be looking for one of these pages:
- [Chemistry annotation](https://chembl.gitbook.io/surechembl/patent-annotation/chemistry-annotation.md)
- [Biomedical annotations](https://chembl.gitbook.io/surechembl/patent-annotation/biomedical-annotations.md)
- [Patent annotation](https://chembl.gitbook.io/surechembl/patent-annotation.md)
- [Query assistant](https://chembl.gitbook.io/surechembl/text-search/query-assistant.md)
- [Export annotations for patent](https://chembl.gitbook.io/surechembl/downloads/export-annotations-for-patent.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://chembl.gitbook.io/surechembl/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://chembl.gitbook.io/surechembl/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/surechembl/patent-annotation/chemistry-annotation.md`)
- Use `Accept: text/markdown` header for content negotiation