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Chitosan Rhodamine

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Chitosan Rhodamine

CS-323
Chitosan Rhodamine, 200-500 cP, 85% DDA
CS-304
Chitosan Rhodamine, MW 200kDa, 95% DDA
CS-305
Chitosan Rhodamine, MW 200kDa, 85% DDA
CS-321
Chitosan Rhodamine, 10-50 cP, 85% DDA

Description

Chitosan is labeled with rhodamine, Ex/Em wavelength 552/575 nm. The rhodamine used in all of polysaccharide products is 5/6-carboxy-tetramethyl-rhodamine, (5/6-TAMRA). Purity: >95% powder. Standard Degree of substitution (DoS): 1 mol % substitution and at least one dye molecule per polymer. Chitosan labeled with other types of rhodamine dyes such as Texas Red, Sulforhodamine 101 is available through our custom synthesis.

Properties

Chitosan is produced by deacetylation  of  chitin, which is the structural  element  in the  exoskeleton  of  crustaceans  (such as crabs and shrimp) and cell walls of  fungi. The degree of deacetylation (%DD) can be determined by  NMR spectroscopy from 60 to 100%.Chitosan products are characterized by either its MW or its viscosity.  The  amino  group in chitosan has a  pKa  value of ~6.5.

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