# Ansun Biopharma

> Privately held, clinical-stage biopharmaceutical company in San Diego, California, founded in 2003. Ansun develops host-directed immuno-biologic therapies from a recombinant sialidase platform; its lead candidate DAS181 is a multi-function sialidase fusion protein studied in parainfluenza virus, severe influenza, human metapneumovirus and COVID-19. Ansun publishes no public API, SDK, developer portal or machine-readable specification — this profile is a company record, not an API record.

## Company

- [Website](https://www.ansunbiopharma.com/): Corporate site.
- [Who We Are](https://www.ansunbiopharma.com/about/who-we-are/): Company background, mission and leadership.
- [Board of Directors](https://www.ansunbiopharma.com/about/board-of-directors/)
- [Scientific Advisory Board](https://www.ansunbiopharma.com/about/scientific-advisory-board/)
- [Contact](https://www.ansunbiopharma.com/contact/): inquiries@ansunbiopharma.com — 11568 Sorrento Valley Road, San Diego, CA 92121, USA.
- [Careers](https://www.ansunbiopharma.com/careers/career-opportunities/)
- [Investors](https://www.ansunbiopharma.com/investors/)

## Science and pipeline

- [Pipeline](https://www.ansunbiopharma.com/pipeline/): Clinical development programs.
- [Research and Technologies](https://www.ansunbiopharma.com/research-technologies/): Sialidase platform overview.
- [DAS181](https://www.ansunbiopharma.com/research-technologies/das181/): Lead recombinant sialidase fusion protein.
- [DAS181 Biology](https://www.ansunbiopharma.com/das181-biology/)
- [Clinical Trials](https://www.ansunbiopharma.com/clinical-trials/)
- [Publications](https://www.ansunbiopharma.com/research-technologies/publications/)
- [Intellectual Property](https://www.ansunbiopharma.com/research-technologies/intellectual-property/)

## News

- [News](https://www.ansunbiopharma.com/news/): Company announcements.
- [News RSS](https://www.ansunbiopharma.com/feed/)

## APIs

None published. Probed 2026-08-06: `/.well-known/security.txt`, `/.well-known/agent-card.json`, `/.well-known/agent.json`, `/.well-known/api-catalog`, `/.well-known/openid-configuration`, `/.well-known/oauth-authorization-server`, `/.well-known/ai-plugin.json`, `/openapi.json`, `/swagger.json`, `/api-docs`, `/api`, `/developers`, `/graphql` all returned 404; `api.` and `developer.` subdomains do not resolve.

## API Evangelist artifacts

- [Domain security](https://raw.githubusercontent.com/api-evangelist/ansun-biopharma/refs/heads/main/security/ansun-biopharma-domain-security.yml): Probed TLS/HSTS/DNSSEC/CAA/SPF/DMARC posture for ansunbiopharma.com.
- [APIs.json](https://raw.githubusercontent.com/api-evangelist/ansun-biopharma/refs/heads/main/apis.yml): This company's machine-readable profile.