D-Leucine CAS 328-38-1 HD-Leu-OH Assay 98.5~101.5% Factory High Quality

pH
Tangohia 0.50g o tenei hua, tāpiri 50ml o te wai, wera ki te memeha, whakamatao, ka whakatau i runga i te ture (General 0631), kia 5.5~6.5 uara pH.
Whakawhitinga o te Otinga
Tangohia te 0.50g o tenei hua, taapirihia te 50ml wai, wera ki te memeha, whakamatao, ultraviolet-kitea spectrophotometry (Ture whanui 0401), ine i te whakawhiti i 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).Ka whakatauritea ki te otinga whakahaere i mahia mai i te 5.0 ml o te wairewa konutai konutai paerewa, kaua e nui ake te aro (0.02%).
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 2.0 ml o te otinga konupora konukawata paerewa, kaua e nui ake te aro (0.02%).
Te tote haukinia
Tangohia tenei hua 0.10g, tirohia kia rite ki te ture (Ture Whanui 0808), ka whakataurite ki te otinga whakahaere i hangaia mai i te wairewa haukinia haukinia 2.0 ML, kaua e hohonu (0.02%).
Ētahi atu Acid Amino
Tangohia he nui e tika ana o tenei hua, tapirihia he wai ki te memeha me te waimeha ki te hanga i tetahi otinga kei roto mo te 20mg mo 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, ruia, hei otinga mana;Tangohia te nui e tika ana o te tohutoro leucine me te tohutoro valine, ka kuhu 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), mimitihia nga otinga e toru i runga ake i ia 5 u1, i runga i te pereti paparanga angiangi silica gel G, me te waikawa acettic n-butanol-wai-glacial (3:1:1) mo te whakawhanaketanga, i muri i te horahanga, whakamaroke-a-rangi, te rehu ki te ninhydrin i roto i te wairewa acetone (1-50), whakamahana i te 80°C kia puta 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
Tangohia te 1.0g o tenei hua ka tirohia i runga i te ture (Ture whanui 0841).Ko te toenga e toe ana kaua e neke ake i te 0.1%.
Tote rino
Tangohia te 1.5g 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 Korewa Taamaha
Ko te toenga e waiho ana i raro i te mea tango i te toenga mura kia kaua e neke ake i te 10 nga wahanga mo ia miriona o te konganuku taumaha ina tirohia e te ture (General Principles 0821, Ture II).
Tote Arsenic
Tāpirihia te 5ml wai, 1ml waikawa pungatara me te 10ml waikawa pungatara, whakamahana ki te rōrahi o te āhua 2ml i roto i te pati wai, tāpiri 5ml wai, tāpiri Dropwise otinga haukini kia kore noa te tohu o te phenolphthalein, tāpiri waikawa pūmāota 5ml, tāpiri wai ki te hanga 28ml , e ai ki te tirohanga ture (General Principles 0822 The first law), me u ki nga tikanga (0.0001%).
Endotoxin huakita
Tangohia tenei hua, tirohia kia rite ki te ture (General 1143), ia lg leucine kei roto endotoxin me iti iho i te 25EU.(Mo te werohanga)
328-38-1 - Whakatau Ihirangi
Tangohia tenei hua e pā ana ki te 0.1g, te taimaha tika, tāpiri waikawa formic anhydrous 1 ml rewa, tāpiri waikawa acetic glacial 25ml, kia rite ki te tikanga titration potentiometric (Ture General 0701), ki te wairewa titration waikawa perchloric (O. 1 mol/L) titration , ka whakatikahia nga hua o te titration me te whakamatautau patea.Ia 1 ml o te wairewa titration waikawa perchloric (0.1 mol/L) e rite ana ki te 13.12 mg o C6H13N02.