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Lipoamide is a trivial name for 6,8-dithiooctanoic amide. It is 6,8-dithiooctanoic acid's functional form where the carboxyl group is attached to protein (or any other amine) by an amide linkage (containing -NH2) to an amino group. Lipoamide forms a thioester bond, oxidizing the disulfide bond, with acetaldehyde (pyruvate after it has been decarboxylated). It then transfers the acetaldehyde group to CoA which can then continue in the TCA cycle. Lipoamide is an intermediate in glycolysis/gluconeogenesis, citrate cycle (TCA cycle), alanine, aspartate and pyruvate metabolism, and valine, leucine and isoleucine degradation (KEGG:C00248). It is generated from dihydrolipoamide via the enzyme dihydrolipoamide dehydrogenase (EC:1.8.1.4) and then converted to S-glutaryl-dihydrolipoamide via the enzyme oxoglutarate dehydrogenase (EC:1.2.4.2).

1-Isothiocyanato-6-(methylsulfinyl)hexane is found in brassicas. Mustard oil from dame's violet (Hesperis matronalis). 1-Isothiocyanato-6-(methylsulfinyl)hexane is a flavour component of Japanese horseradish (Wasabia japonica).

Preservative. Prevents late blowing in semi-hard cheeses due to Clostridium tyrobutyricum. Lysozyme is part of the innate immune system. Children fed infant formula lack lysozyme in their diet and have three times the rate of diarrheal disease.[citation needed] Since lysozyme is a natural form of protection from pathogens like Salmonella, E.coli and Pseudomonas, when it is deficient due to infant formula feeding, can lead to increased incidence of disease.; Whereas the skin is a protective barrier due to its dryness and acidity, the conjunctiva (membrane covering the eye) is instead protected by secreted enzymes, mainly lysozyme and defensin. However, when these protective barriers fail, conjunctivitis results. Lysozyme is found in garden onion, papaya, and soft-necked garlic.

A lipoamide obtained by condensation of the carboxy group of (R)-lipoic acid with ammonia." []