D-Tryptophan CAS 153-94-6 (HD-Trp-OH) Mayeso 98.5~101.0% Factory

Acidity
Tengani 1g ya mankhwalawa, onjezerani 50ml ya madzi kuti musungunuke, ndikuyesa motsatira malamulo (General Rule 5.4).Mtengo wa pH uyenera kukhala 5.4 ~ 6.4.
Kutumiza kwa njira
tengani 0.5g ya mankhwalawa, onjezerani 2mol/L hydrochloric acid solution 20ml kuti musungunuke, malinga ndi ultraviolet-visible spectrophotometry (General rule 0401), yesani kufalikira kwa 430nm kutalika, osachepera 95.0%.
Chloride
Tengani 0.25g ya mankhwalawa ndikuyiyang'ana motsatira malamulo (General Law 0801).Poyerekeza ndi njira yowongolera yopangidwa ndi 0.02% ya sodium chloride solution, sayenera kukhala yokhazikika ().
Sulfate
Tengani l.0g ya mankhwalawa ndikuyiyang'ana molingana ndi malamulo (General Law 0802).Poyerekeza ndi njira yowongolera yopangidwa ndi 0,02% ya njira yokhazikika ya potaziyamu sulphate, sayenera kukhala yokhazikika ().
Ammonium Salt
Tengani 0.10g ya mankhwalawa ndikuwunika molingana ndi lamulo (General rule 0808).Poyerekeza ndi njira yowongolera yopangidwa ndi 0,02% ya njira yokhazikika ya ammonium chloride, sikhala yozama ().
Ma Amino Acids ena
Tengani 0,30g ya mankhwalawa, muyike mu botolo la 20ml, onjezerani 1 mol / L hydrochloric acid solution 1 ml ndi madzi kuti asungunuke, kusungunula ndi madzi pamlingo, kugwedeza bwino, monga njira yothetsera;tengani 1 ml molondola, ikani mu botolo loyezera la 200ml, tsitsani kuti muyese ndi madzi, gwedezani bwino, ndipo mugwiritseni ntchito ngati njira yothetsera.Tengani 10mg ya tryptophan control ndi tyrosine control, ndikuyiyika mu botolo loyezera la 25ml, 1 ml ya 1 mol / L hydrochloric acid solution ndi madzi oyenerera adawonjezeredwa kuti asungunuke yankho.Njira yothetsera vutoli idachepetsedwa ndi madzi ndikugwedezeka kuti apange njira yabwino yothetsera dongosolo.Malinga ndi mayeso woonda wosanjikiza chromatography (General 0502), kuyamwa atatu pamwamba njira aliyense 2 μL, motero, pa silika gelisi G woonda wosanjikiza mbale, ndi n-butanol-glacial acetic asidi-madzi (3:1:1) kufalitsa, kufalitsa, kuuma, kupoperani ndi ninhydrin mu acetone solution (1-50), kutentha pa 80 ℃ mpaka mfundo ikuwonekera, ndikuwona nthawi yomweyo.Njira yothetsera vutoli iyenera kuwonetsa malo omveka bwino, ndipo njira yothetsera vutoli iyenera kusonyeza mawanga awiri olekanitsidwa.Ngati yankho loyesa likuwonetsa mawanga odetsedwa, mtunduwo suyenera kukhala wozama (0.5%) kuposa malo akulu owongolera.
Kutaya pa Kuyanika
Tengani mankhwalawa, owuma pa 105 ℃ kwa maola 3, kuchepa kwa thupi sikudzapitirira 0.2% (General Act 0831).
Zotsalira pa Ignition
Tengani 1.0g ya chinthuchi ndikuchiyang'ana molingana ndi malamulo (General Law 0841).Zotsalira zomwe zatsala siziyenera kupitirira 0.1%.
Mchere wa Chitsulo
Tengani mankhwalawa 1.0g mutatha kuyaka ndi phulusa, onjezerani hydrochloric acid (2ml) ku zotsalira, ziumeni pamadzi osamba, kenaka yikani dilute hydrochloric acid (4ml), sungunulani kutentha pang'ono, kuwonjezera madzi (30ml) ndi ammonium persulfate. (50mg), ndipo fufuzani izo molingana ndi lamulo (General ulamuliro 0807), sayenera kuya (0.002%) kuposa njira ulamuliro opangidwa muyezo chitsulo njira.
Zitsulo Zolemera
Zotsalira zomwe zatsala pansi pa chinthu chotengera chotsalira choyatsira sizikhala ndi magawo opitilira 10 pa miliyoni imodzi yazitsulo zolemera zikafufuzidwa ndi lamulo (General Principles 0821, Law II).
Mchere wa Arsenic
tengani 2.0g wa mankhwalawa, onjezerani 5ml wa hydrochloric acid ndi 23ml wa madzi kuti musungunuke, fufuzani motsatira malamulo (General lamulo 0822 lamulo loyamba), ayenera kutsatira zoperekedwa (0.0001%).
Bakiteriya Endotoxin
kutenga mankhwala, kuwonjezera anthu endotoxin mayeso madzi, ndi kutentha kwa 80 ℃ kupasuka, fufuzani malinga ndi lamulo (General 1143), aliyense LG tryptophan munali endotoxin ayenera kukhala zosakwana 50EU.(Ya jakisoni)
Kutsimikiza Kwazinthu
Tengani mankhwalawa pafupifupi 0.15g, kulemera kwake kolondola, onjezani anhydrous formic acid 3ml kusungunuka, onjezerani glacial acetic acid 50ml, malinga ndi njira ya titration (General ulamuliro 0701), ndi hydrochloric acid titration solution (0.1 mol/L) titration, ndi zotsatira za titration zinakonzedwa ndi mayeso opanda kanthu.1 ml iliyonse ya perchloric acid titration solution (0.1 mol/L) imafanana ndi 20.42mg ya C11H12N2O2.