Compound Q&A
What regulatory guidelines apply to 4H-Thieno[3',2':4,5]cyclopenta[1,2-b]thiophen-4-one (CAS: 25796-77-4)?
Answer
![4H-Thieno[3',2':4,5]cyclopenta[1,2-b]thiophen-4-one](https://static.chemtradehub.com/structs/257/25796-77-4-acba.webp "4H-Thieno[3',2':4,5]cyclopenta[1,2-b]thiophen-4-one")
4H-Thieno[3',2':4,5]cyclopenta[1,2-b]thiophen-4-one (CAS: 25796-77-4) falls under the scope of the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) and is subject to REACH regulations. It may also be regulated by the EPA and FDA for specific uses. Producers and users should ensure compliance with local and national regulations regarding storage, disposal, and handling.
About
CAS No
25796-77-4
English Name
4H-Thieno[3',2':4,5]cyclopenta[1,2-b]thiophen-4-one
Molecular Formula
C9H4OS2
Molecular Weight
192.26 g/mol
SMILES
O=C1C2=C(SC=C2)C2=C1C=CS2
InChIKey
HFIUHKXJUKKOIZ-UHFFFAOYSA-N
Last Updated: 2025-10-03 07:50
![4H-Thieno[3',2':4,5]cyclopenta[1,2-b]thiophen-4-one — Leyan Reagents](https://static.chemtradehub.com/suppliers/67ce1f8657537e5c8069b370/67ce1f8657537e5c8069b370-logo.webp){kind=logo}
![4H-Thieno[3',2':4,5]cyclopenta[1,2-b]thiophen-4-one — Beijing Bailingwei Technology Co., Ltd.](https://static.chemtradehub.com/suppliers/67cde31e57537e5c8069aebf/67cde31e57537e5c8069aebf-logo.webp){kind=logo}