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The exception proves the rule is a phrase that arises from ignorance, though common to good writers. The original word was preuves, which did not mean proves but tests. [4] In this sense, the phrase does not mean that an exception demonstrates a rule to be true or to exist, but that it tests the rule, thereby proving its value.
Due to the focus on countable ordinals, ordinal arithmetic is used throughout, except where otherwise noted. The ordinals described here are not as large as the ones described in large cardinals, but they are large among those that have constructive notations (descriptions). Larger and larger ordinals can be defined, but they become more and ...
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], ... An example is a monoglyceride, ...
Sodium tert-butoxide (or sodium t-butoxide) is a chemical compound with the formula (CH 3) 3 CONa (abbr. NaOtBu). [2] It is a strong, non-nucleophilic base. It is flammable and moisture sensitive. It is sometimes written in the chemical literature as sodium t -butoxide. It is similar in reactivity to the more common potassium tert -butoxide.
Isobutyric anhydride. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Isobutyric anhydride is an organic compound with the formula ( (CH3)2CHCO)2O. It is an acyclic carboxylic anhydride of isobutyric acid. [ 2 ] It is classified as an organic acid anhydride, being derived from ...
Potassium iodate. E917 (glazing agents, ...) [K+]. [O-]I (=O)=O. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Potassium iodate (K I O 3) is an ionic inorganic compound with the formula KIO3.
Except where otherwise noted, data are given for materials in their standard state ... for example sodium tellurite, is a compound that contains this ion.
Formate is a common C-1 source in living systems. It is formed from many precursors including choline, serine, and sarcosine. It provides a C-1 source in the biosynthesis of some nucleic acids. Formate (or formic acid) is invoked as a leaving group in the demethylation of some sterols. [2] These conversions are catalyzed by aromatase enzymes ...