Observed arrival · 2026-10-29
CyberRXN: chemical reactions with sources attached
A search tool for reported chemical reactions in US patents, with conditions and original patent text available in a browser or AI assistant.
○Open
⊠Login
$Paid
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Chemists checking patent reaction precedents
- Worth noticing
- The example separates reaction conditions from a later drying step and links the record to its original patent paragraph.
Field notes
The search flow starts from a reactant or product structure and presents exact or structurally similar matches. Records include extracted conditions and a patent excerpt; the worked example distinguishes a reaction step from a later drying step. The site says conditions are extracted automatically, not expert-verified, and frames the source text as necessary context. It lists a browser Playground, assistant connectors, SDKs, a CLI, and 17 MCP tools.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue