4521 Chitin Chitin belongs to the carbohydrates and carbohydrate conjugates, a subclass of organooxygen compounds within the organic compounds. With an average molecular weight of 683.70 g/mol, Chitin is a heavy molecule. This exogenous solid has the formula C28H49N3O16. It is a linear polysaccharide composed of beta-1,4 linked units of acetylglucosamine, also known as N-acetyl-D-glucos-2-amine. This structure is similar to cellulose, but with one hydroxyl group on each monomer replaced by an acetylamine group, allowing for increased hydrogen bonding and strength. Chitin is the second most abundant biopolymer on earth and is a main component in the exoskeletons of insects and other arthropods, the cell walls of fungi, and some other animals. When deacetylated, it is called chitosan. In biological systems, chitin is detected in the spleen, testes, intestine, and fibroblasts. It is a human metabolite and serves as an environmental nutrient (PMC6017418). Industrially, it is used as a filler and an abrasive (PMC6017418). Its applications include use as a vulnerary (PMC6017418) and as a treatment for psoriasis (PMC10137892). Bacteria can break down chitin by producing enzymes that reduce the polymer to ammonia and simple sugars. 1398-61-4 21252321 C28H49N3O16 683.7 White powder. No indication of carcinogenicity to humans (not listed by IARC). If chitin is detected they then produce enzymes to digest the chitin by reducing it to simple sugars and ammonia. It is the second most abundant biopolymer on earth, found especially in insects and fungi. 2014-08-29T06:51:34Z 2026-08-31T13:01:31Z Chitin C00461 17029 14-N-ACETYL-BETA-D-GLUCOSAMINYLN1 DB15142 true CC(=O)NC1[C@H](O)OC(CO)[C@@H](COC[C@@H]2OC(CO)[C@@H](COC[C@@H]3OC(CO)[C@@H](O)[C@H](O)C3NC(C)=O)[C@H](O)C2NC(C)=O)[C@@H]1O C28H49N3O16 InChI=1S/C28H49N3O16/c1-11(35)29-21-19(9-44-8-15-17(5-33)47-28(42)23(25(15)39)31-13(3)37)45-16(4-32)14(24(21)38)7-43-10-20-22(30-12(2)36)27(41)26(40)18(6-34)46-20/h14-28,32-34,38-42H,4-10H2,1-3H3,(H,29,35)(H,30,36)(H,31,37)/t14-,15-,16?,17?,18?,19+,20+,21?,22?,23?,24+,25+,26-,27-,28-/m1/s1 DJHJJVWPFGHIPH-OODMECLYSA-N 683.6992 683.311282535 Exogenous Solid -6.7 HMDB03362 399508 Kurita, Keisuke; Koyama, Yoshiyuki; Nishimura, Shinichiro; Kamiya, Mami. Facile preparation of water-soluble chitin from chitosan. Chemistry Letters (1989), (9), 1597-8. CHEM003427 DTXSID6037641 NS00044179 N-[(2R,4S,5S)-5-[[(2R,4R,5S)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]methoxymethyl]-2-[[(3S,4S,6R)-5-acetamido-4,6-dihydroxy-2-(hydroxymethyl)oxan-3-yl]methoxymethyl]-4-hydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide -2.51 -0.92 7.58e+01 g/l Organic compounds Organic oxygen compounds Organooxygen compounds Carbohydrates and carbohydrate conjugates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 776t3gAAAAAQAAAAAwAAAAAAAAAvAAAAMQAAAIABBgBgAAAAAQMGACgAAAAD BAgAKAAAAAMCBwBoAAAAAwIBBgBgAAAAAwEGIDQAAAACAQQIAGAAAAABAQgA IAAAAAIGAGAAAAADAQYAYAAAAAICCABgAAAAAQEGIDQAAAABAQQGAGAAAAAC AggAIAAAAAIGAGAAAAACAgYgNAAAAAIBBAgAIAAAAAIGAGAAAAADAQYAYAAA AAICCABgAAAAAQEGIDQAAAABAQQGAGAAAAACAggAIAAAAAIGAGAAAAACAgYg NAAAAAIBBAgAIAAAAAIGAGAAAAADAQYAYAAAAAICCABgAAAAAQEGIDQAAAAB AQQIAGAAAAABAQYgNAAAAAIBBAgAYAAAAAEBBgBgAAAAAwEHAGgAAAADAgEG ACgAAAADBAYAYAAAAAEDCAAoAAAAAwIGIDQAAAACAQQIAGAAAAABAQYAYAAA AAMBBwBoAAAAAwIBBgAoAAAAAwQGAGAAAAABAwgAKAAAAAMCBiA0AAAAAgEE CABgAAAAAQELAAEAAQIoAgEDIAMEAAQFAAUGAAUHAAcIAAgJAAkKAAgLAAsM AAwNAA0OAA4PAA8QABARABESABITABEUABQVABUWABYXABcYABgZABkaABob ABscABodAB0eAB0fAB8gAB8hACEiACIjICMkACMlKAIUJgAmJwAmKAAoKQAp KiAqKwAqLCgCCy0ALS4ALQQAKA8AIRgAQgMAAAAGBC0LCAcFBhARFCYoDwYZ Gh0fIRgXBAAAAAAAAAAW 2026-09-19T04:01:18Z