L-Phenylalanine CAS 63-91-2 (H-Phe-OH) Assay 98.5~101.5% Factory High Quality

Ko te L-Phenylalanine, ina whakamaroke, kaua e iti iho i te 98.5% o C9H11NO2.
Whakaahuatanga Ko te L-Phenylalanine he kiripiri ma, he paura tioata ranei.He kakara, he ahua ngoikore ranei, he paku kawa te reka.He memeha noa i roto i te waikawa formic, he iti te wairewa ki te wai, he kore noa ki te waiwaro (95).Ka memeha ki roto i te waikawa waimaota waimeha.
Te Tautuhinga Whakatauhia te tuāwhiorangi whakauru infrared o L-Phenylalanine, i whakamarokehia i mua, pera i te whakahau i roto i te tikanga kōpae pāhare pāporo bromide i raro i te Spectrophotometry Infrared <2.25>, ka whakatairitehia te tūāwhiorangi ki te Tūāwhiorangi Tohutoro: e whakaatu ana nga tūāwhiorangi e rua i te kaha o te horonga i te tau ngaru kotahi .
Te Hurihanga Matapihi <2.49> [a]D20: -33.0° ki te -35.59° (i muri i te whakamaroketanga, 0.5 g, wai, 25 mL, 100 mm).
pH <2.54> Whakarewa te 0.20 g o L-Phenylalanine ki te 20 mL wai: ko te pH o tenei otinga kei waenganui i te 5.3 me te 6.3
Maamaa (1) Maama me te tae o te otinga-Whakarewa 0.5 g o L-Phenylalanine ki te 10 mL o te 1 mol waikawa pūhaumāota TS: he maamaa te otinga me te kore tae.
(2) Chloride <1.03>-Mahia te whakamatautau me te 0.5 g o L-Phenylalanine.Whakaritehia te otinga whakahaere me te 0.30 mL o te 0.01 mol/L waikawa pūhaumāota VS (kaua e neke ake i te 0.021%).
(3) Sulfate <1.14>-Mahia te whakamatautau me te 0.6 g o L-Phenylalanine.Whakaritehia te otinga whakahaere me te 0.35 mL o te 0.005 mol/L waikawa pungatara VS (kaua e neke ake i te 0.028z).
(4) Ammonium <1.02>-Mahia te whakamatautau me te 0.25 g o L-Phenylalanine.Whakapaia te otinga mana me te 5.0 mL o te Waihanga Haukini Paerewa (kaua e neke ake i te 0.02%).
(5) Koutara Taumaha <1.07>-Whakarewahia te 1.0 g o te L-Phenylalanine ki te 40 mL o te wai me te 2 mL o te waikawa ahetiki waimeha ma te whakamahana, te whakamatao, me te taapiri i te wai kia 50 mL.Mahia te whakamatautau ma te whakamahi i tenei otinga hei otinga whakamatautau.Whakapaia te otinga whakahaere penei e whai ake nei: ki te 2.0 mL o te Wairewa Arataki Paerewa me tapiri te 2 mL o te waikawa ahetiki waimeha me te wai kia 50 mL (kaua e neke ake i te 20 ppm).
(6) Arsenic <1.11>-Warekahia te 1.0 g o te L-Phenylalanine ki te 5 mL o te waikawa pūhaumāota waimeha me te 15 mL o te wai, ka mahia te whakamatautau me tenei otinga hei otinga whakamatautau (kaua e neke ake i te 2 ppm).
(7) Nga matū e pa ana-Whakarewahia te 0.10 g L-Phenylalanine ki te 25 mL wai, ka whakamahi i tenei otinga hei tauira otinga.Pipeto 1 mL o te tauira otinga, ka tapirihia he wai kia 50 mL.Pipeto 5 mL o tenei wairewa, tapirihia he wai kia rite ki te 20 mL, ka whakamahi i tenei otinga hei otinga paerewa.Mahia te whakamatautau me enei rongoatanga pera i te whakahau i raro i te Thin-layer Chromatography <2.03>.Tuhia te 5mL o ia tauira otinga me te otinga paerewa ki runga i te pereti kirikiri mo te chromatography paparanga angiangi.Whakawhanakehia te pereti me te ranunga o te 1-butanol, te wai me te waikawa acetic (100) (3:1:1) ki te tawhiti o te 10 cm, ka whakamaroke i te pereti i te 809C mo te30meneti.Mahia kia rite te wairewa ninhydrin i roto i te acetone (1 i roto i te 50) ki runga i te pereti, ka whakamahana i te 80 ℃ mo te 5 meneti: ko nga wahi i tua atu i te waahi matua mai i te tauira otinga kaore i te kaha ake i te waahi mai i te otinga paerewa.
Ngaronga i te whakamaroke <2.41> Kaua e neke ake i te 0.30% (1 g, 105℃, 3 haora).
Te toenga i runga i te mura <2.44> Kaua e neke ake i te 0.10% (1 g).
Whakamaatau Kia tika te pauna mo te 0.17 g o te L-Phenylalanine, kua maroke i mua, ka memeha ki te 3 mL o te waikawa formic, tāpirihia te 50mL o te waikawa acetic (100), ka titrate <2.50> ki te 0.1 mol/L perchloric acid VS (potentiometric titration).Whakaritehia he whakatau patea, me te whakatika i nga mea e tika ana.
Ia mL o te 0.1 mol/L waikawa perchloric VS＝16.52 mg o C9H11NO2
Ipu me te rokiroki Ipu-Tight ipu.