123389-88-8

Basic information

• Product Name: d-Galactose, dinonyl mercaptal
• Synonyms: d-Galactose, dinonyl mercaptal
• CAS NO: 123389-88-8
• Molecular Weight: 0
• Mol File: 123389-88-8.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• CAS DataBase Reference: d-Galactose, dinonyl mercaptal(CAS DataBase Reference)
• NIST Chemistry Reference: d-Galactose, dinonyl mercaptal(123389-88-8)
• EPA Substance Registry System: d-Galactose, dinonyl mercaptal(123389-88-8)

Safety Data

• Hazardous Substances Data: 123389-88-8(Hazardous Substances Data)

Upstream product

• 50-99-7 D-glucose 
• 1455-21-6 Nonane-1-thiol 

Relevant articles and documents

Liquid Crystalline Carbohydrate Dithioacetals

Various S,S-dialkyl acetals of hexanal and numerous aldoses, tripodal in structure, have been synthesized,characterized and investigated by optical microscopy and D.S.C.Most of these geminal dithioacetals show a complicated melting behaviour and are thermotropic liquid crystalline, exhibiting only one smectic-like phase of identical type.This mesophase is not miscible with the SAd-Phase of other amphiphilic sugar-based liquid crystals.As shown in a homologues series of D-glucose S,S-dialkylacetal derivatives clearing points are rising as function of growing number n of carbon atoms in their S-alkyl chains.With constant n given a similar trend is observed by varying the length of the polar, hydrophilic sugar units.Regarding stereochemistry the dithioderivatives 5 and 12 of the pentose or hexose series, respectively, with a configuration related to that of D-mannose exhibit relatively the most stable mesophase.However, the most stable mesophase of all investigated sugar dithioderivatives is exhibited by the heptose S,S-dialkylacetal 13.Surprisingly, derivative 10 of L-rhamnose (6-desoxy-L-mannose) - the terminal hydroxyl group in the sugar chain of mannose is missing! - showed to be non-mesomorphic, demonstrating that a terminal hydroxyl group of these sugar derivatives seems to be essential for exhibiting a mesophase.On the other hand, as shown with the dithioderivative 9 of 2-desoxy-D-glucose in comparison to the derivative 8e and 12 of D-glucose or D-mannose, respectively, their clearing points seem to be less, although differently effected if an internal hydroxyl group - for instance here at C-2 - has been stripped off.Melting behaviour as well as thermomesogenic properties of the presented amphiphilic carbohydrate liquid crystals in relationship to their molecular structure are discussed in detail. - Key words: Aldoses, Liquid Crystals, Mesophases, Sugar S,S-Dialkyl Acetals, Tripodal Amphiphiles