USBio Logo

012039 FlAsH-EDT2 CAS: 212118-77-9

Specifications
References
CAS Number
212118-77-9
Grade
Highly Purified
MDL Number
MFCD27977924
Molecular Formula
C24H18As2O5S4
Molecular Weight
664.5
EU Commodity Code
38220090
UN DOT Shipping
UN3465 PGIII
Shipping Temp
Blue Ice
Storage Temp
-20°C
4',5'-Bis(1,3,2-dithiarsolan-2-yl)-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one; FlAsH; Fluorescein Arsenical Helix Binder; Lumio Green

The Fluorescein Arsenical Hairpin Binder (FlAsH) method is presented for fluorescence labeling of proteins in living cells. Labeling proteins with the membrane-permeant fluorogenic biarsenical dye fluorescein arsenical hairpin binder-ethanedithiol (FlAsH-EDT2). The membrane-permeant fluorogenic biarsenicals FlAsH-EDT2 and ReAsH-EDT2 can be prepared in good yields by a straightforward two-step procedure from the inexpensive precursor dyes fluorescein and resorufin.

Synonyms
4',5'-Bis(1,3,2-dithiarsolan-2-yl)-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one; FlAsH; Fluorescein Arsenical Helix Binder; Lumio Green
CAS No
212118-77-9
Molecular Formula
C24H18As2O5S4
Molecular Weight
664.5
Purity
≥96%
Appearance
White to pale orange solid
Melting Point
>173ºC (dec)
Solubility
Chloroform (Slightly, Heated), Methanol (Very Slightly, Heated)
Method for Determining Identity
Proton NMR (CDCl3) Spectroscopic and Mass Spectrometric Analysis
TLC Conditions
SiO2; Ethyl Acetate:Hexanes = 1:1; Visualized with UV and AMCS; SIngle Spot, Rf=0.50
Elemental Analysis
Calculated: %C: 43.38, %H: 2.73
Storage and Stability
May be stored at RT for short-term only. Long-term storage is recommended at -20°C. For maximum recovery of product, centrifuge the original vial prior to removing the cap. Light and temperature sensitive. Store under inert atmosphere.
Important Note
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
Toxicity and Hazards
 All products should be handled by qualified personnel only, trained in laboratory procedures.
References
1. Gaietta, G., et al.: Science, 296, 503 (2002). 2. Hoffmann, C., et al.: Nature Methods, 2, 171 (2005). 3. Dyachok, O., et al.: Nature, 439, 349 (2006). 4. Gautier, A., et al.: Chem. Biol., 15, 128 (2008)
USBio References
No references available
Pricing
Order
Proceed to Checkout
Cart Summary
ProductSizeListYour PriceQtyExt Price
Subtotal:Subtotal:
Subtotal:Subtotal:
Total Coupon Savings:Total Coupon Savings:()
Your cart is currently empty.
- Coupon Code
Recently Viewed
  • Contact Us

    Visit our technical library or contact our support staff to answer your questions.

    Telephone:
    1-800-520-3011

    Library | Contact

    Distributors

    For customers outside of the United States, please use one of our many distributors.

    View Distributors

    Payment Methods

    We accept the following payment methods as well as pay-by-invoice.

    MasterCard Visa PayPal
    © 2023-2024 United States Biological - All Rights Reserved