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CS-W001157 4
Total: USD 88.00

3,3-Dimethyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine

  • CAS No. 255901-50-9

  • Cat. No. CS-0110817
  • Purity≥97%
  • MDL No.MFCD08705268
  • HazMat Fee +

    HazMat Fee

    An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it. There is a HazMat shipping fee for each item that qualifies as a dangerous good, except in the following scenarios:

    The shipment is processed through FedEx Ground under the Limited Quantity option.

    Each bottle is packed as an Excepted Quantity, with a maximum of 1g for items in class 6.1 packing group I or II, and up to 25g for all other hazardous materials.

    If shipping is charged to your FedEx account, the HazMat fee will be billed directly by the courier. Otherwise, the fee will be included on your invoice. To help you avoid the HazMat fee, we can package a 5g order of a class 6.1 packing group I or II material as five separate 1g units, and a 100g order of any other dangerous good as four 25g units. This packaging adjustment will be made unless you instruct otherwise on your purchase order. Below, you will find the fee schedule from FedEx for handling hazardous materials.

    Type
    HazMat Fee
    Excepted Quantity $0.00
    FedEx Limited Quantities Ground $0.00
    Hazmat Ground shipping $50.00+
    Inaccessible (Haz class 6.1 or 9), Domestic $68.00+
    Accessible (Haz class 3, 4, 5 or 8), Domestic $158.00+
    Inaccessible (Haz class 6.1 or 9), International $108.00+
    Accessible (Haz class 3, 4, 5 or 8), International $238.00+

    An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it.

    There is a HazMat shipping fee for each item that qualifies as a dangerous good. Please contact our quotation team via email to confirm the details.

*For research and further manufacturing use only, not for direct human use.

3,3-Dimethyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine|CS-0110817

Structure of 255901-50-9

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Description

This thienodioxepine scaffold integrates a sterically shielded dioxepine ring fused to a thiophene core, delivering enhanced stability and favorable solubility in organic media. Its rigid, electron-rich architecture enables efficient incorporation into advanced synthetic intermediates for pharmaceutical and materials applications.

Application

3,3-Dimethyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine serves as a stable, bench-ready heterocyclic building block for medicinal chemistry and materials science. Its fused thienodioxepine core exhibits excellent functional group tolerance and facilitates modular derivatization via electrophilic substitution or transition-metal-catalyzed coupling. The dimethyl substitution enhances solubility and metabolic stability, making it a practical scaffold for exploring bioactive compounds and advanced electronic materials.

General Information

  • CAS No. 255901-50-9
  • Cat. No. CS-0110817
  • Purity ≥97%
  • MDL No. MFCD08705268
  • Storage 4°C
  • Shipping Room temperature in continental US; may vary elsewhere.
  • Molecular Formula C₉H₁₂O₂S
  • Molecular Weight 184.26
  • Synonym(s) 3,4-(2,2-Dimethylpropylenedioxy)thiophene
  • SMILES CC1(COC2=CSC=C2OC1)C

Computational Chemistry Data

  • TPSA   18.46
  • LogP   2.5455
  • H_Acceptors   3
  • H_Donors   0
  • Rotatable_Bonds   0

Safety Information

Download SDS
GHS Pictogram :
GHS No : GHS07
Signal Word : Warning
UN#: N/A
Class : N/A
Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P330-P362+P364-P405-P501

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