D(+)-Melibiose monohydrate, 2.5 g, glass
Molar mass (M) 360,32 g/mol
Melting point (mp) 190 °C
CAS No. [66009-10-7]
excl. VAT. | 2.5 g per Pack Qty.
Art. No. 4223.1
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Carbohydrates or Saccharides make up 50 % of the dry biomass of the earth and are therefore the most frequent class of biomolecules. Besides at least two hydroxy groups, they also have an aldehyde or a ketone group and can be subdivided according to the number of monomeric components in mono-, di-, oligo and polysaccharides.
Whereas mono-, di- and oligosaccharides are soluble in water, taste sweet and are therefore called as sugar, polysaccharides are hardly, or not at all, soluble in water and have a neutral taste.
Carbohydrates, together with fats and proteins make up a large percentage of nutrition. In addition to their central role as an energy source, they are also an important structural component especially in plants (e.g. Cellulose). Ribose, a monosaccaride with five carbons (C5H10O5) is an essential element of coenzymes (such as ATP, FAD and NAD) and a structural component of RNA. Desoxyribose (a ribose derivative) is a structural component of DNA.
Disaccharides consist of two monosaccharide units. These are interlinked covalently via a glycocide bond. The most familiar representatives are saccharose, lactose and maltose.
|Appearance||white to yellowish crystals|
|Assay (HPLC)||≥99.0 %|
|Specific rotation [α]a||+133° to +137°|
|Water (KF)||≤6.0 %|
|Heavy metals (as Pb)||≤0.0001 %|