Sulforhodamine 101 sulfonyl chloride is a fluorescent probe that binds to free amino groups and is a derivative of sulforhodamine 101. It displays excitation/emission maxima of 585/602 nm, respectively. Sulforhodamine 101 sulfonyl chloride has commonly been used as a fluorescent conjugate on antibodies or proteins for the detection of proteins via fluorescent microscopy and flow cytometry applications.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.