INCWADANA YEENDABA
Ngemibuzo malunga neemveliso zethu okanye uluhlu lwamaxabiso, nceda ushiye i-imeyile yakho kuthi kwaye siya kuqhagamshelana phakathi kweeyure ezingama-24.
BUZA NGOKUImeko yezothutho&ecetyiswayo indlela yokuthumela ngenqanawa:
Ngomoya, ngolwandle okanye nge-express
Imeko yokugcina:
Gcina kwindawo emnyama, itywinwe kwindawo eyomileyo, ubushushu beGumbi
Ubuncinci boMyinge woMyalelo:
Uthethathethwano
Isiqinisekiso:
COA, HPLC, GC, HNMR, Assay, Water Content(KF), TLC iyafumaneka
I-ETHYL 4-NITRO-L-PHENYLALANINE;
L-Phenylalanine, 4-nitro-, ethyl ester;
p-Nitro-L-phenylalanine ethyl ester;
(S)-Ethyl 2-amino-3-(4-nitrophenyl)propanoate;
4-NO2-Phe-Oet;ETHYL 4-NITRO-L-PHENYLALANINE USP/EP/BP
Ngokuqhelekileyo zisetyenziselwa ukupakisha umgubo.Yaye anokuthintela ukukhanya kwelanga namanzi ukuba angabi mabi.
Ibhokisi elukhuni inokukhusela iimveliso zakho ekuqhekekeni kwaye zibe manzi.
I-Ester yenziwe kwi-esterization reaction ye-asidi ye-inorganic okanye i-asidi ephilayo okanye utywala.Utywala okanye i-phenol okanye i-anhydride ene-acidic, i-alcohol kunye ne-ethylene, i-acidic yamahhala kunye ne-fatty nitrogen derivatives nayo inokuvelisa i-ester.I-hydrogen kwi-alpha-carbon kwii-molecule ze-ester ilahlekelwa utywala be-molecular kunye nenye i-molecular ester phantsi kweemeko ze-alkaline ukuvelisa i-β-keto ester, ebizwa ngokuba yi-ester contraction reaction.Ngokomzekelo, i-acetyl acetate yenziwe ukuvelisa i-acetyl ethyl acetate.Le mpendulo ibaluleke kakhulu kwi-organic synthesis.
Igama le-ester livela kwigama elihambelanayo le-carboxylic acid kunye notywala okanye i-phenol, njenge "asidi ethile kunye ne-ester ethile".Ii-esters zesangqa zibizwa ngokuba yilactone (lactone).Iimpawu zeekhemikhali ze-ester zifana ne-amyl niche anhydride, ejongene ne-hydrolysis, utywala kunye ne-ammonia reaction.I-ester yomgangatho ophantsi inevumba elimnandi kunye nolwelo oluguquguqukayo olungenambala, kwaye i-ester ephezulu iqinile.I-Estes zizinyibilikisi ezibalulekileyo kunye nemathiriyeli ekrwada yokwenziwa, kwaye ezinye ii-esters ziziyobisi ngokwazo.Ngokohlobo lwe-asidi, i-ester inokohlulwa ibe yi-ester ye-asidi ye-inorganic kunye ne-organic acid ester.I-Etate, i-ethyl acetate yi-ester enamafutha, i-acetate yi-ester enevumba elimnandi, kunye ne-namanonate yi-cyclic ester.
L-Phe | HD-Phe-OH | L-Phe(4-NO2)-OH | L-Phe(4-NO2).H2O |
I-D-Phe(4-NO2)-OH | 4-NO2-D-phe.Hcl | HL-Phe-OtBu.HCl | HD-Phe-OtBu.HCl |
D,L-Phe-OtBu HCl | I-HD-Phe(4-NO2)-Ome.HCl | D-Phe-Obzl.Hcl | DL-Phe-Ome.Hcl |
HN-Me-L-Phe.Hcl | L-Phe-NH2.Hcl | N-AC-L-Phe-Ome | 4-NO2-Phe-Oet.HCl |
HD-Phe-OMe·HCl | HL-Phe-OMe.HCl | H-DL-Phe-OBzl.Tos | H-DL-Phe(4-NO2)-OH.H2O |
HL-Phe-OBzl.HCl | HL-Phe-OEt.HCl |