A new route to polyamino acids containing histidine
โ Scribed by Mati Fridkin; Shmuel Shaltiel
- Book ID
- 115701125
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 407 KB
- Volume
- 147
- Category
- Article
- ISSN
- 0003-9861
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๐ SIMILAR VOLUMES
The Michael-addition of polyfluoroalkenoates with thiophenols in acetonitvile in the presence of Na- HC03 yielded the corresponding addition products, which were further treated with polyphosphoric acid (PPA) to give a series of new fluorine-containing thiochromones in good yields.
A simple and sensitive assay for polyamino acids (e.g., poly-L-glutamic and poly-L-aspartic acids) is described. The assay is performed by titrating anionic polyamino acids with a poly-L-arginine titrant. Earlier reported lower molecular weight titrants, such as protamine, did not interact with the