Diethylenetriaminepentaacetic acid CAS 67-43-6 DTPA

CN201410102702.0 discloses a preparation method and application of novel functionalized gold nanoparticles that can be visualized under magnetic resonance imaging technology.

In the present invention, diethylenetriaminepentaacetic acid with sulfhydryl group and polyethylene glycol with sulfhydryl group are used as modifiers, and the stable bonding action between Au-S bonds and a reducing agent are used to prepare functionalized gold nanoparticles. The ratio of gold nanoparticles to GdCl3 chelates Gd3+, and binds mPEG-SH, using the strong paramagnetism of Gd-DTPA complex and the hydrophilicity and bioaffinity of polyethylene glycol molecules, resulting in a small particle size. , uniform distribution, magnetic resonance imaging, long circulation, good biocompatibility of gold nanoparticles. The gold nanoparticles can be used for MRI in vivo tracking of the biodistribution and survival of the graft in the living host, and evaluation of the effect caused by the graft.

The invention provides a new way for the MRI in vivo tracing graft and the detection method of drug distribution in vivo.

CN201610700548.6 discloses an admixture for improving the activity of thermally excited coal gangue, which is composed of the following raw materials by weight:

Calcium acetate 5%-10%, dicalcium hydrogen phosphate 2%-5%, sodium metaaluminate 2%-5%, silane coupling agent 0.1%-1%, maltodextrin 0.5%-2%, triethanolamine 1 %-5%, triethanolamine borate 1%-2%, sodium metaborate 3%-6%, carboxymethyl hydroxymalonic acid 0.5%-1%, diethylenetriaminepentaacetic acid 0.2%-0.8%, silicon 10%-20% of diatomaceous earth, balance of limestone powder.

The synergistic effect of various chemical additives in the invention can effectively improve the activity of thermally excited coal gangue.

CN201810325682.1 discloses the preparation method of rare earth-based precision equipment cable material. Manganese acetate, sodium chromate, hexamethylenetetramine and other raw materials are prepared into activated adhesives and then mixed with rare earth, ethyl methacrylate, polycarbonate, polysulfone, polymethyl methacrylate, polyalkylene Raw materials such as alcohol, rosin resin, barium ferrite, azobisisobutylcyanide, 6-methoxy-2-naphthalene formaldehyde, hexadienoic acid, diethylenetriaminepentaacetic acid, The cable material for rare earth-based precision equipment is prepared by the steps of stirring, casting a mold, standing for cooling, water-cooling drawing, solution aging and the like. The prepared rare earth-based cable material for precision equipment has good electrochemical performance and stable material, and can be suitable for use in various precision equipment.