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
Inokuba kubushushu obuqhelekileyo
Cebisa indlela yokuthumela ngenqanawa
Ngomoya Ngomhlaba Ngolwandle
Imeko yokugcina:
I-2-8 ° C, kufuneka igcinwe kwindawo evaliweyo, ebandayo kwaye engenalanga.
Beka ubomi kwishelufa
Malunga neminyaka emi-2
Ubuncinci uMyalelo weQty:
1kg (uthethathethwano)
Isiqinisekiso:COA, indawo yokunyibilika, iSpecificRotation [α]D20
Siza kuthumela nayiphi na idatha oyifunayo.Ungayibona idatha ngaphambili njengereferensi.
Kwiimveliso ezilungiselelwe wena, sithumela eyona datha intsha emva kokuba iphumile.
i-benzyl 3-phenyl-L-alaninate;phenylalanine O-benzyl ester;
(S) -2-Amino-3-phenylpropionic acid benzyl ester;
L-Phenylalanine benzyl;
L-Phenylalanine benzyl ester;
Phenylalanine benzyl;
1738-78-9 (4-Toulenesulfonate);
Zihlala zisetyenziselwa ukupakisha umgubo.Kuxhomekeke kwiimfuno zabathengi.Ke ngoko, sixelele ngemfuno yakho phambi kokupakisha ukuba unezicelo ezizodwa.
I-1kg ukuya kwi-25kg Ukupakisha kwangaphandle kunzima.Kwaye kunzima ukusika kunye nomonakalo.Inokukhusela iimveliso zakho ngokugqibeleleyo.
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 | 4-NO2-Phe-Oet | 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 | N-AC-L-Phe-Ome |
1. Malunga ne-MOQ: Sinokuyilungisa ngokwemfuno yakho.
2. Malunga nesampuli: Isampuli idinga umrhumo wesampuli, onokuthi ube yimpahla yokuqokelela okanye unokuhlawula kuthi kwangaphambili.
3. Iworkshop yokubunjwa, inokwenziwa ngokwezifiso ngokwenani leemodeli.
4. Sinikezela ngeyona nkonzo ibalaseleyo.Iqela lokuthengisa elinamava sele lisebenzela wena.
5. Malunga notshintshiselwano: Nceda uthumele i-imeyile okanye uxoxe nam ngokufanelekileyo.