微囊藻***LA，MicrocystinLA，MC-LA，藻***，LAProductSpecificationIdentity:IdentitydeterminedbyMS.Formula:***6H67N7O12MW:910.0Purity:≥95%(HPLC)Appearance:Whitishfilmadheredtoinsideofthevial.CAS:96180-79-9RTECS:GT2805000Source/Host:IsolatedfromMicrocystisaeruginosa.Solubility:Solublein100%ethanolormethanol.LongTermStorage:-20°CUse/Stability:Stocksoluti***arestableforupto6monthswhenstoredat-20°C.UnstableatpH>7.7.Hazard: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.)