Structure of sodium L-malate monohydrate
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Sodium 2-mercaptoethanesulfonate monohydrate (coenzyme M sodium salt monohydrate)
The 2-thio-ethanesulfonate anion is the smallest known coenzyme in nature (HS-CoM) and plays a key role in methano-genesis by anaerobic archaea, as well as in the oxidation of alkenes by Gram-negative and Gram-positive eubacteria. The title compound, Na(+)·C(2)H(5)O(3)S(2) (-)·H(2)O, is the Na(+) salt of HS-CoM crystallized as the monohydrate. Six O atoms form a distorted octa-hedral coordinati...
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In the title compound, Na(+)·C(6)H(4)IO(3)S(-)·H(2)O, the Na atom is hexa-coordinated by O atoms, forming a two-dimensional sheet-like structure in the bc plane, with the iodo-benzene rings protruding above and below. Na⋯O contact distances are in the range 2.419 (2)-2.7218 (18) Å and O⋯Na⋯O angles are in the range 73.70 (5)-158.64 (7)°. The crystal structure is stabilized by O-H⋯O and C-H⋯O hy...
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The title hydrated mol-ecular salt, C4H12N+·C4H5O6-·H2O, was prepared by deprotonation of enanti-opure l-tartaric acid with racemic sec-butyl-amine in water. Only one enanti-omer was observed crystallographically, resulting from the combination of (S)-sec-butyl-amine with l-tartaric acid. The sec-butyl-ammonium moiety is disordered over two conformations related by rotation around the CH-CH2 bo...
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1 These ingredients are nonmonograph except when used to prepare acidulated phosphate fluoride treatment rinses identified in § 355.10(a)(3) of this chapter. 201(p) of the Federal Food, Drug, and Cosmetic Act (the act), for which an approved application or abbreviated application under section 505 of the act and part 314 of this chapter is required for marketing. In the absence of an approved n...
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The asymmetric unit of the title compound, C(8)H(20)N(+)·C(4)H(5)O(5) (-)·1.36H(2)O, contains two independent ion pairs, with similar conformations, and three water mol-ecules of crystallization, one water mol-ecule haing a site-occupancy factor of 0.721 (5). Intra-molecular O-H⋯O hydrogen bonds, involving the hydr-oxy groups and an O atom of each carboxyl-ate anion, generate five-membered ring...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 2008
ISSN: 0108-7673
DOI: 10.1107/s0108767308087734