N-(Propargyl-PEG2)-N-Boc-PEG3-t-butyl ester is a click chemistry branched linker. The propargyl group can react with azide-bearing compounds through Click Chemistry, the t-butyl protected carboxyl group can also be deprotected under mild acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
N-(Propargyl-PEG2)-N-Boc-PEG3-t-butyl ester is a click chemistry branched linker. The propargyl group can react with azide-bearing compounds through Click Chemistry, the t-butyl protected carboxyl group can also be deprotected under mild acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
RAA uses a novel RNA substrate tagged with a fluorescent reporter molecule (fluor) on one end and a quencher on the other. In the absence of RNases, the physical proximity of the quencher dampens fluorescence from the fluor to extremely low levels. When RNases are present, however, the RNA substrate is cleaved, and the fluor and quencher are spatially separated in solution. This causes the fluor to emit a bright green signal when excited by light of the appropriate wavelength. Fluorescence can be readily detected with a fluorometer. Since the fluorescence of the RAA Substrate increases over time when RNase activity is present, results monitored with a fluorometer can be evaluated kinetically. The sequence of the RAA Substrate has been carefully optimized to detect several RNases, including RNase A, RNase T1, RNase I, micrococcal nuclease, S1 nuclease, mung bean nuclease, and Benzonase.
RNase activity in a convenient and sensitive fluorimetric assay that delivers results in real time. Great for Quality Testing for RNase contamination of materials and supplies.
| Clone | IHC019 |
| Source | Mouse Monoclonal |
| Positive Control | Bladder, Colon Carcinoma, Colon, Thyroid Carcinoma |
| Dilution Range | 1:200 |
Cytokeratin 19 (CK19) forms intermediate filaments found in the intracytoplasmic cytoskeleton of epithelial tissue and provides mechanical support. Anti-Cytokeratin 19 stains epithelia and epithelial malignancies such as carcinomas of the colon, stomach, pancreas, biliary tract, liver, and breast. Cytokeratin 19 is a useful marker for distinguishing hepatocellular carcinoma from intrahepatic cholangiocarcinoma. This differentiation is improved when stained in combination with Cytokeratin 7, CAM5.2l, Ber-EP4/MOC31, HepPar1 and TTF1. Cytokeratin 19 staining can also be used to recognize thyroid papillary carcinomas.