微囊藻***LW，MicrocystinLW，MC-LW，藻***，LWProductSpecificationIdentity:IdentitydeterminedbyMS.Formula:C54H72N8O12MW:1025.2Purity:≥95%(HPLC)Appearance:Whitishfilmadheredtoinsideofthevial.CAS:157622-02-1Source/Host:IsolatedfromMicrocystisaeruginosa.Solubility:Solublein100%methanol.LongTermStorage:-20°CHazard:HIGHLYIRRITANT.MAYBECARCINOGENIC.VERYTOXIC.Handling:Formaximumproductrecoveryafterthawing,centrifugethevialbeforeopeningthecap.Background/TechnicalInformation:Microcystinsareagroupofcyclicheptapeptidehepatotoxinsproducedbyanumberofcyanobacterialgenera.Themostnotableofwhich,andnamesake,isthewidespreadgenusMicrocystis.Structurally,allmicrocystinsc***istofthegeneralizedstructurecyclo(-D-Ala1-X2-D-MeAsp3-Y4-Adda5-D-Glu6-Mdha7-).XandYarevariableL-aminoacids,D-MeAspisD-erythro-ß-methylasparticacidandMdhaisN-methyldehydroalanine.AddaisthecyanobacteriauniqueC20ß-aminoacid3-amino-9-methoxy-2,6,8-trimethyl-10-phenyl-deca-4,6-dienoicacid.Substituti***ofthevariableL-aminoacidsatpositi***2and4giverisetoatleast21knownprimarymicrocystinanalogsandalterati***intheotherc***tituentaminoacidsresultinmorethan90reportedmycrocystinstodate.)