L-Phenylalanine CAS 63-91-2 (H-Phe-OH) Assay 98.5 ~ 101.5% Warshada Tayada Sare

L-Phenylalanine, marka la qalajiyo, waxay ka kooban tahay wax aan ka yarayn 98.5% ee C9H11NO2.
Sharaxaada L-Phenylalanine waxay u dhacdaa sida kiristaalo cad ama budada crystalline.Waa mid aan ur lahayn ama uu leeyahay ur sifada ah oo daciif ah, waxayna leedahay dhadhan qadhaadh ah.Waxay si xor ah ugu milmaysaa aashitada formic, si yar bay ugu milmi kartaa biyaha, iyo ficil ahaan aan lagu milmi karin ethanol (95).Waxay ku milmi acid hydrochloride.
Aqoonsiga Go'aami nooca nuugista infrared ee L-Phenylalanine, oo hore loo qalajiyey, sida lagu faray habka potassium bromide disk ee hoos yimaada Spectrophotometry Infrared <2.25>, oo barbar dhig spectrum iyo Tixraaca Tixraaca: labada muuqaalba waxay muujinayaan xoojinta nuugista ee tirooyinka hirarka isku midka ah. .
Wareegga indhaha <2.49> [a] D20: -33.0° ilaa -35.59° (ka dib qalajinta, 0.5 g, biyo, 25 mL, 100 mm).
pH <2.54> Ku milmi 0.20 g oo L-Phenylalanine ah 20 ml oo biyo ah: pH ee xalkani waa inta u dhaxaysa 5.3 iyo 6.3
Nadiif (1) Cadnaanta iyo midabka xalka-Mila 0.5 g ee L-Phenylalanine 10 mL ee 1 mol hydrochloric acid TS: xalku waa cad yahay oo aan midab lahayn.
(2) Chloride <1.03>-Ku samee tijaabada 0.5 g oo L-Phenylalanine ah.Ku diyaari xalka xakamaynta 0.30 mL ee 0.01 mol/L hydrochloride acid VS (aan ka badnayn 0.021%).
(3) Sulfate <1.14> -Ku samee tijaabada 0.6 g ee L-Phenylalanine.Ku diyaari xalka xakamaynta 0.35 mL ee 0.005 mol/L sulfuric acid VS (aan ka badnayn 0.028z).
(4) Ammonium <1.02>-Ku samee tijaabada 0.25 g ee L-Phenylalanine.Ku diyaari xalinta xakamaynta 5.0 mL ee Heerka Ammonium Solution (aan ka badnayn 0.02%).
(5) Biraha culus <1.07>-Ku mil 1.0 g oo L-Phenylalanine ah 40 mL oo biyo ah iyo 2 mL oo ah aashitada walaxda adoo diirinaya, qabow, oo ku dar biyo si aad u samayso 50 mL.Samee tijaabada adoo isticmaalaya xalkan sidii xalka tijaabada.U diyaari xalinta xakamaynta sida soo socota: ilaa 2.0 mL ee Xalka Lead ee Caadiga ah ku dar 2 mL oo ah asiidh dufan ah iyo biyo si aad u samayso 50 mL (aan ka badnayn 20 ppm).
(6) Arsenic <1.11>-Ku mil 1.0 g oo L-Phenylalanine ah 5 mL oo ah dilute hydrochloride acid iyo 15 mL oo biyo ah, oo ku samee tijaabada xalkan sida xalka tijaabada (aan ka badnayn 2 ppm).
(7) Walxaha laxidhiidha-Ku mil 0.10 g oo L-Phenylalanine ah 25 ml oo biyo ah, una isticmaal xalkan sida xal muunada.Tuub 1 ml oo ah xalka muunada, kuna dar biyo si aad u samayso 50 ml oo sax ah.Dhuumaha 5 mL ee xalkan, ku dar biyo si aad u samayso 20 ml oo sax ah, oo u isticmaal xalkan sida xalka caadiga ah.Ku samee tijaabada xalalkan sida lagu faray Chromatography-ka khafiifka ah <2.03>.Bar 5mL mid kasta oo ka mid ah muunadda muunada iyo xalalka caadiga ah saxan jel silica ah oo loogu talagalay chromatography-ka khafiifsan.Ku samee saxanka isku dar ah 1-butanol, biyo iyo acetic acid (100) (3:1:1) ilaa dhererka qiyaastii 10 cm, oo qalaji saxanka 809Cfor30minutes.Si siman ugu buufi xal ninhydrin ah oo acetone ah (1 in50) saxanka dushiisa, kuna kulayl 80℃ 5 daqiiqo: dhibco kale oo aan ka ahayn meesha ugu muhiimsan ee xalka muunada ma aha kuwo ka xoog badan barta xalka caadiga ah.
Khasaaraha qallajinta <2.41> In aan ka badnayn 0.30% (1 g, 105 ℃, 3 saacadood).
Hadhaaga dabka <2.44> In aan ka badnayn 0.10% (1 g).
Assay Si sax ah u miisaan qiyaastii 0.17 g ee L-Phenylalanine, oo hore loo qalajiyey, oo ku milmi 3 mL oo ah acid formic, ku dar 50mL oo acetic acid (100), iyo titrate <2.50> oo leh 0.1 mol/L perchloric acid VS (titration potentiometric).Samee go'aan maran, oo samee sixid kasta oo lagama maarmaan ah.
ml kasta oo ah 0.1 mol/L perchloric acid VS ＝16.52 mg ee C9H11NO2
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