
1) Sugar acid
Found on
https://www.crosswordclues.com/clue/mucic-acid

Mucic acid, C6H10O8 or HOOC-(CHOH)4-COOH, (also known as galactaric or meso-galactaric acid) is an aldaric acid obtained by nitric acid oxidation of galactose or galactose-containing compounds such as lactose, dulcite, quercite, and most varieties of gum. ==Properties== Mucic acid forms a crystalline powder, which melts at 230 °C. It is insoluble...
Found on
http://en.wikipedia.org/wiki/Mucic_acid

[
n] - a solid acid (C6H10O8) found in milk or sugar
Found on
http://www.webdictionary.co.uk/definition.php?query=mucic%20acid

An acid contained in small quantities in wine (also galactaric acid, mucic acid), which belongs to the non-volatile acids. It is an oxidation product of galacturonic acid (botrytic acid) and is formed by the noble mold Botrytis cinerea. The sparingly soluble calcium salt of this acid may form as a white, crystalline precipitate during prolonge...
Found on
https://glossary.wein.plus/mucic-acid
noun a solid acid (C6H10O8) found in milk or sugar
Found on
https://www.encyclo.co.uk/local/20974

a white, crystalline, water-soluble powder, CHO, obtained by the oxidation of certain gums, milk sugar, or galactose, and used chiefly in organic synthesis. Also called
Found on
https://www.infoplease.com/dictionary/mucic-acid
No exact match found.