About CAS BASE

CAS BASE is a lightweight chemical CAS number lookup tool. It lets you search common industrial and laboratory chemicals by their CAS Registry Number, name, molecular formula or alias, and view key properties at a glance.

What you can do

• Look up a substance by its CAS number (e.g. 67-64-1).
• Search by name or formula (e.g. Acetone or C3H6O).
• Browse the full CAS database list.
• Jump to PubChem for deeper reference data.

Disclaimer

The data here is provided for general reference only. Always consult an authoritative Safety Data Sheet (SDS/MSDS) before handling any chemical. CAS is a registered trademark of the American Chemical Society; this project is not affiliated with or endorsed by it.