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HATU was first reported by Louis A. Carpino in 1993 as an efficient means of preparing active esters derived from 1-hydroxy-7-azabenzotriazole (HOAt). [2] HATU is commonly prepared from HOAt and TCFH under basic conditions [3] and can exist as either the uronium salt (O-form) or the less reactive iminium salt (N-form).
California Digital Library higherenglishgra00bainrich (User talk:Fæ/IA books#Fork20) (batch #56512) File usage No pages on the English Wikipedia use this file (pages on other projects are not listed).
Books from the Library of Congress advancedenglishg00hart (User talk:Fæ/IA books#Fork5) (batch 1885-1899 #466) File usage No pages on the English Wikipedia use this file (pages on other projects are not listed).
The first published English grammar was a Pamphlet for Grammar of 1586, written by William Bullokar with the stated goal of demonstrating that English was just as rule-based as Latin. Bullokar's grammar was faithfully modeled on William Lily's Latin grammar, Rudimenta Grammatices (1534), used in English schools at that time, having been ...
The tables below provides information on the variation of solubility of different substances (mostly inorganic compounds) in water with temperature, at one atmosphere pressure. Units of solubility are given in grams of substance per 100 millilitres of water (g/100 ml), unless shown otherwise. The substances are listed in alphabetical order.
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Ancient Greek had the term τέκνή γραμματική (téchnē grammatikḗ, 'skill in the use of letters'), which was adapted into Latin as ars grammatica.This term was used in the title of works about writing and language, which came to be known in English as grammar-books or grammars.
HBTU (Hexafluorophosphate Benzotriazole Tetramethyl Uronium) is a coupling reagent used in solid phase peptide synthesis.It was introduced in 1978 and shows resistance against racemization.