Lhasa Limited
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| Not-for-profit educational charity | |
| Industry | Software, Chemical safety |
| Founded | 1983 |
| Founders | Peter Johnson, Philip Judson |
| Headquarters | Leeds, United Kingdom |
Area served | Worldwide |
Key people | Chris Barber (CEO) |
| Products | Derek Nexus, Sarah Nexus, Meteor Nexus, Zeneth, Vitic, Mirabilis, Kaptis, Acrostic, LCDB |
Number of employees | 200 |
| Website | www |
Lhasa Limited is a UK-based not-for-profit educational charity founded in 1983,[1][2] specialising in the development of software that supports decision-making in chemical safety assessments.[3] The company originated from the Logic and Heuristics Applied to Synthetic Analysis (LHASA) project developed at Harvard University and later the University of Leeds.[4]
History
Lhasa Limited was established by Dr Peter Johnson and Dr Philip Judson, evolving from the original LHASA project at Harvard and the University of Leeds.[5] Initially based within the University of Leeds, Dr Peter Johnson built a team focused on expert systems for chemical synthesis and toxicology prediction.[6]
The organisation was set up as a not-for-profit entity and registered as an educational charity, with the goal of improving chemical safety through shared knowledge and predictive software.[7]
Software
Lhasa Limited develops software used in chemical safety assessment, including Derek Nexus[8], Sarah Nexus[9], Meteor Nexus[10] and Zeneth.[11]
Key milestones and achievements
Lhasa Limited received the Queen’s Award for Enterprise: Innovation twice, first in 2016 for Derek Nexus and again in 2017 for Sarah Nexus.[12][13]
References
- ↑ "LHASA LIMITED". Register of Charities. Retrieved 15 August 2025.
- ↑ "Lhasa Limited annual report and consolidated financial statements". Register of Charities. Retrieved 15 August 2025.
- ↑ "Our solutions". Lhasa Limited. Retrieved 14 August 2025.
- ↑ Pensak, David; Corey, E.J. (1 June 1977). "LHASA—Logic and Heuristics Applied to Synthetic Analysis". Computer-Assisted Organic Synthesis. ACS Symposium Series. Vol. 61. American Chemical Society. pp. 1–19. doi:10.1021/bk-1977-0061.ch001. ISBN 978-0-8412-0394-5. Retrieved 18 August 2025.
- ↑ "Chapter 4. International Repercussions of the Harvard LHASA Project". Knowledge-based Expert Systems in Chemistry. Theoretical and Computational Chemistry Series. 2019. pp. 39–45. doi:10.1039/9781788016186-00039. ISBN 978-1-78801-471-7.
- ↑ "About Us - Keymodule". Keymodule. Archived from the original on 2024-07-24. Retrieved 2025-08-13.
- ↑ "LHASA LIMITED". Register of Charities. Retrieved 18 August 2025.
- ↑ Judson, Philip (2009). Knowledge-based Expert Systems in Chemistry: Not Counting on Computers. Royal Society of Chemistry. ISBN 9780854041602. Retrieved 2025-11-21.
- ↑ Cayley, Alex N.; Foster, Robert S.; Brigo, Alessandro (2023). "Assessing the utility of common arguments used in expert review of in silico predictions as part of ICH M7 assessments". Regulatory Toxicology and Pharmacology. 144 105490. doi:10.1016/j.yrtph.2023.105490. PMID 37659712. Retrieved 2025-11-21.
- ↑ Marchant, Carol A.; Briggs, Katharine A.; Long, Anthony (2008). "In silico tools for sharing data and knowledge on toxicity and metabolism: Derek for Windows, Meteor, and Vitic". Toxicology Mechanisms and Methods. 18 (2–3): 177–187. doi:10.1080/15376510701857320. PMID 20020913.
- ↑ Hemingway, Rachel; Baertschi, Steven W.; Benstead, David (2024). "In Silico Prediction of Pharmaceutical Degradation Pathways: A Benchmarking Study Using the Software Program Zeneth". Organic Process Research and Development. 28 (3): 674–692. doi:10.1021/acs.oprd.3c00344. Retrieved 2025-11-21.
- ↑ "The Winners: Queen's Awards for Enterprise 2016". The Royal Household. Retrieved 2025-11-21.
- ↑ "Queen's Awards for Enterprise 2017". The Royal Household. 11 July 2017. Retrieved 2025-11-21.
External links
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