D-Histidine CAS 351-50-8 HD-His-OH Assay 98.5~101.0% Factory

pH
tangohia te 1.0g o tenei hua, taapirihia te 50ml wai kia memeha, ka ine kia rite ki te ture (Ture Whanui 0631).Ko te uara pH kia 7.0~8.5.
Whakawhitinga o te Otinga
Tangohia te 0.60g o tenei hua, taapirihia te wai 20ml ki te memeha, kia rite ki te spectrophotometry UV-kitea (Ture General 0401), ine i te whakawhiti ki te 430nm roangaru, kaua e iti iho i te 98.0%.
pūhaumāota
Tangohia kia 0.25 karamu o tenei hua ka tirohia i runga i te ture (Ture Whanui 0801).Ki te whakatauritea ki te otinga whakahaere i mahia mai i te 0.02% o te wairewa konutai konutai paerewa, kaua e nui ake te aro ().
pūkawa
Tangohia te 1.0g o tenei hua ka tirohia i runga i te ture (Ture Whanui 0802).Ka whakatauritea ki te otinga whakahaere i mahia mai i te 0.02% o te otinga konupora konukawata paerewa, kaua e nui ake te aro ().
Te tote haukinia
tangohia te 0.10g o tenei hua ka tirohia i runga i te ture (Ture Whanui 0808).Ka whakatauritea ki te otinga whakahaere i mahia mai i te 0.02% o te wairewa haukinia haukinia paerewa, kaua e hohonu ake ().
Ētahi atu waikawa Amino
tango i te nui e tika ana o tenei hua, tapirihia he wai hei memeha me te waimeha hei hanga i tetahi otinga kei roto i te 10 mg ia lml hei otinga whakamatautau;Tangohia te 1ml mo te ine tika, ka maka ki roto i te ipu ine 200ml, ka waimeha ki te tauine ki te wai, ruru pai, hei otinga mana;Tangohia te nui o te tohutoro histidine me te tohutoro proline, ka tuu ki roto i te ipu ine kotahi, ka tapirihia te wai kia memeha ka waimeha hei whakarite i tetahi otinga kei roto tata ki te 0.4mg ia 1ml hei otinga e tika ana mo te punaha.E ai ki te whakamatautau chromatography paparanga angiangi (General 0502), Tuhia te 5 u1 o ia wairewa e toru i runga ake nei, tohuhia ki runga i te pereti kahu angiangi silica gel G, me te wairewa haukini N-propanol-concentrated (67:33) hei te whakawhanake i te whakarewa, te whakawhānui, te maroke, te rehu ki te ninhydrin i roto i te wairewa acetone (1-50), whakamahana i te 80°C tae noa ki te puta mai o nga waahi, me te tirotiro tonu.Ko te otinga whakahaere me whakaatu he waahi marama, me te otinga e tika ana ma te punaha e whakaatu kia rua nga waahanga kua wehea.Mena ka whakaatuhia e te otinga whakamatautau nga waahi poke, kaua te tae e hohonu ake (0.5%) i te waahi matua o te otinga whakahaere.
Ngaronga i te whakamaroke
tangohia tenei hua, whakamaroke i te 105 ℃ mo te 3 haora, ko te mate taimaha kaua e neke ake i te 0.2% (Ture Whanui 0831).
Te toenga i runga i te mura
Kaua e neke ake i te 0.1% (Ture whanui 0841).
Tote rino
tangohia te 1.0g o tenei hua ka tirohia i runga i te ture (Ture Whanui 0807).Ki te whakatauritea ki te otinga whakahaere i hangaia ki te 0.001% o te wairewa rino paerewa, kaua e hohonu ake ().
Nga konganuku taumaha
Ko tenei hua 1.0g, te tirotiro i runga i te ture (General Principles 0821 The first law), kei roto nga konganuku taumaha kaua e neke ake i te 10 nga wahanga mo ia miriona.
Tote Arsenic
tangohia te 2.0g o tenei hua, tāpirihia te 23ml wai kia memeha, tāpirihia te 5ml waikawa pūmāota, tirohia kia rite ki te ture (Ture General 0822 ture tuatahi), me whai ki nga tikanga (0.0001%).
Endotoxin huakita
Tangohia tenei hua, tirohia kia rite ki te ture (Ture Whanui 1143), ia lg histidine kei roto endotoxin kia iti iho i te 6.0EU.(Mo te werohanga)
351-50-8 - Whakaritenga ihirangi
Tangohia tenei hua mo te 0.15g, te pauna tika, taapirihia te waikawa formic anhydrous 2ml ki te tareka, tāpirihia te waikawa acettic glacial 50ml, kia rite ki te tikanga titration pea (Ture General 0701), me te otinga titration waikawa perchloric (0.1 mol/L), me te i whakatikahia nga hua o te titration me te whakamatautau patea.Ko ia 1 ml wairewa titration waikawa perchloric (0.1 mol/ L) e rite ana ki te 15.52mg o C6H9N302.