milk sugar

Lac - definition from Biology-Online.org

[a resinous substance produced mainly on the banyan tree, but to some extent on other trees, by the coccus lacca, a scale-shaped insect, the female of which fixes herself on the bark, and exudes from the margin of her body this resinous substance. Stick-lac is the substance in its natural state, incrusting small twigs. When broken off, and the colouring matter partly removed, the granular residuum is called seed-lac. When melted, and reduced to a thin crust, it is called shell-lac or shellac. lac is an important ingredient in sealing wax, dyes, varnishes, and lacquers. Ceylon lac, a resinous exudation of the tree Croton lacciferum, resembling lac. lac dye, a scarlet dye obtained from stick-lac. lac lake, the colouring matter of lac dye when precipitated from its solutions by alum. mexican lac, an exudation of the tree Croton draco. Origin: Per. Lak; akin to Skr. Laksha: cf. f. Lague, It. & NL. lacca. cf. lake a colour, lacquer, litmus.


InChI: InChI=1/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11u,12+/m1/s1

InChIKey: InChIKey=GUBGYTABKSRVRQ-FFSLHOAMBK
SMILES: OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O

CAS number 63-42-3

Names:
    beta-D-Gal-(1->4)-D-Glc
    D-lactose
    Lac
    lactobiose
    lactose
    Laktobiose
    Laktose
    Milchzucker
    milk sugar
    β-D-Galp-(1→4)-D-Glcp
    (+)-lactose
    4-O-β-D-galactopyranosyl-D-glucose
    4-(β-D-galactosido)-D-glucose

Registries:
    ChemSpider: InChIKey=GUBGYTABKSRVRQ-FFSLHOAMBK
    PubChem CID 440995
    Beilstein =1292745
    CAS 63-42-3 (from NIST)
    ChEBI 17716
    Gmelin 882872
    Kegg C06373
    PubChem ID 8609


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