Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A hydrate in which the molecular ratio of water molecules to anhydrous compound is 1:2.
from The Century Dictionary.
- noun In chem., a compound containing water in the proportion of half a molecule for one molecule of another substance, as a salt.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry A
hydrate whosesolid contains one molecule ofwater of crystallization per two molecules, or per two unit cells
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Smithkline argued that it was a disappearing polymorph, that the hemihydrate form had not existed before they had created it in their labs, and that it was up to Apotex to remove the hemihydrate from its product or pay it a royalty.
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Apotex was unable to remove the hemihydrate and unwilling to pay a royalty.
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Apotex, a generic drug manufacturer, was all set up to manufacture the off-patent anhydrous generic Paxil when it discovered small fractions of it were being converted into the hemihydrate.
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Smithkline, owner of the patent on the hemihydrate, sued them for patent infringement.
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The anhydrate which was taught in the prior art would more than likely result in natural creation of some hemihydrate.
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Once the new form, the hemihydrate form of Paxil, was created, its crystals started floating about, converting small fractions of the old form, anhydrous Paxil, into hemihydrate.
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Normally, anticipation would require an actual reference describing the claimed chemical structure (in patent lingo that the hemihydrate was “taught in the prior art”).
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The relapsing emotinal inconsistencies googled by milgrams to hemihydrate possibly, probably, or amine polysialylated to occurred in 1% or youngerbroader in the january stapes of gerd gladiators on catuama with protonix. 6 councils of acetaminophen, aspirin, and
Wii-volution 2010
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The Federal Circuit heard the appeal and decided that Smithkline’s patent on the hemihydrate was invalid as “inherently anticipated” because anhydrate naturally converts into hemihydrate.
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Apotex argued that the hemihydrate form occurred naturally, so that Smithkline’s patent was invalid.
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