> For the complete documentation index, see [llms.txt](https://chembl.gitbook.io/surechembl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://chembl.gitbook.io/surechembl/patent-annotation/chemistry-annotation.md).

# Chemistry annotation

## Chemistry Annotation Coverage

Chemistry annotation is performed for US, EP, WO, CN and JP documents, up to a certain extent depending on the available data.

|                    | US  | EP  | WO  | CN  | JP                              |
| ------------------ | --- | --- | --- | --- | ------------------------------- |
| Text annotation    | Yes | Yes | Yes | Yes | Yes (from titles and abstracts) |
| Image to structure | Yes | Yes | Yes | No  | No                              |
| Mol files          | Yes | No  | No  | No  | No                              |

## Chemistry Annotation Pipeline

The process is fully automatic. Over the year, we have used different tools for compound annotation from text, and image to structure. Since 2025, we have started using [LeadMine](https://www.nextmovesoftware.com/leadmine.html), and {to-be-announced}, respectively.

<figure><img src="/files/QAJUYYXntfeMwBlxX9tN" alt=""><figcaption></figcaption></figure>