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

pH
Tora 0.50g yechigadzirwa ichi, wedzera 50ml yemvura, kupisa kunyungudika, kutonhora, uye kuona maererano nemutemo (General 0631), pH kukosha kunofanira kuva 5.5 ~ 6.5.
Transmittance of Solution
Tora 0.50g yechigadzirwa ichi, wedzera 50ml yemvura, kupisa kunyungudika, kutonhora, ultraviolet-visible spectrophotometry (General rule 0401), kuyera transmittance pa430nm wavelength, kwete pasi pe98.0%.
Chloride
Tora 0.25g yechigadzirwa ichi uye utarise maererano nemutemo (General mutemo 0801).Kuenzaniswa nemhinduro yekutonga yakagadzirwa ne5.0 ml yeyakajairwa sodium chloride mhinduro, haifanirwe kuve yakanyanya kuomeswa (0.02%).
Sulfate
Tora 1.0g yechigadzirwa ichi uye utarise maererano nemutemo (General mutemo 0802).Kuenzaniswa nemhinduro yekudzora yakagadzirwa 2.0 ml yeyakajairwa potassium sulfate solution, haifanirwe kuve yakanyanya kuomeswa (0.02%).
Ammonium Munyu
Tora chigadzirwa ichi 0.10g, tarisa maererano nemutemo (General mutemo 0808), uye enzanisa pamwe control solution yakagadzirwa standard ammonium chloride solution 2.0 ML, kwete kudzika (0.02%).
Zvimwe Amino Acid
Tora huwandu hwakakodzera hwechigadzirwa ichi, wedzera mvura kuti inyunguduke uye inyungurudze kuita mhinduro ine nezve 20mg pa lml seyedzo mhinduro;Tora 1ml yekuenzanisa kuyerwa uye uiise mu 200ml yekuyeresa flask, dilue kusvika pachiyero nemvura, zunza, sekugadzirisa kugadzirisa;Tora chiyero chakakodzera chereucine reference uye valine reference, uye uise mubhokisi rekuyeresa rimwe chete, mvura yakawedzerwa kunyunguduka uye yakanyungudutswa kugadzirira mhinduro ine inenge 0.4mg imwe neimwe pa1ml segadziriro-yakakodzera sarudzo.Zvinoenderana neyakatetepa layer chromatography (General 0502) bvunzo, tora mhinduro nhatu dziri pamusoro imwe neimwe 5 u1, zvichiteerana, pane imwechete silica gel G nhete layer plate, ine n-butanol-mvura-glacial acetic acid (3:1:1) yekusimudzira, mushure mekuiswa, kuomeswa kwemhepo, kupfapfaidza ninhydrin muacetone solution (1-50), kupisa pa80 ° C kusvika makwapa aonekwa, uye kuongorora nekukurumidza.Iyo yekudzora mhinduro inofanirwa kuratidza yakajeka nzvimbo, uye iyo system inoshanda mhinduro inofanirwa kuratidza maviri akapatsanurwa makwapa.Kana mhinduro yekuedza ichiratidza mavara asina kuchena, ruvara harufanire kunge rwakadzika (0.5%) kupfuura nzvimbo huru yemhinduro yekutonga.
Kurasika paKuomesa
Tora chigadzirwa ichi, chakaoma pa105 ℃ kwemaawa matatu, kurasikirwa kwehuremu hakufaniri kudarika 0.2% (General mutemo 0831).
Residue paIgnition
Tora 1.0g yechigadzirwa ichi uye utarise zvinoenderana nemutemo (General mutemo 0841).Zvakasara zvakasara hazvifaniri kudarika 0.1%.
Iron Munyu
Tora 1.5g yechigadzirwa ichi uye utarise zvinoenderana nemutemo (General mutemo 0807).Kana ichienzaniswa neyakagadziriswa mhinduro yakagadzirwa ne0.001% yeyakajairwa iron solution, haizove yakadzika ().
Heavy Metals
Zvakasara zvakasara pasi pechinhu chekutora zvakasara zvemoto hazvifaniri kuva nezvikamu zvinopfuura gumi pamamiriyoni eheavy metal kana zvichiongororwa nemutemo (General Principles 0821, Law II).
Arsenic Munyu
Wedzera 5ml mvura, 1ml sulfuric acid uye 10ml sulfurous acid, kupisa kusvika pahuwandu hunosvika 2ml mukugeza kwemvura, wedzera 5ml mvura, wedzera Dropwise ammonia solution kusvika chiratidzo che phenolphthalein chisina kwazvakarerekera, wedzera hydrochloric acid 5ml, isa mvura kuita 28ml. , maererano nekuongorora kwemutemo (General Principles 0822 Mutemo wekutanga), inofanira kuenderana nemitemo (0.0001%).
Bacterial Endotoxin
Tora chigadzirwa ichi, tarisa maererano nemutemo (General 1143), imwe neimwe lg leucine ine endotoxin inofanira kunge iri pasi pe25EU.(Yejekiseni)
328-38-1 - Content Determination
Tora chigadzirwa ichi chinenge 0.1g, kunyatsoyera kuyera, wedzera anhydrous formic acid 1 ml yakanyungudika, wedzera glacial acetic acid 25ml, maererano ne potentiometric titration nzira (General mutemo 0701), ine perchloric acid titration solution (O. 1 mol/L) titration , uye mhedzisiro yetitration yakagadziriswa nebvunzo isina chinhu.Imwe neimwe 1 ml ye perchloric acid titration solution (0.1 mol / L) inoenderana ne13.12 mg yeC6H13N02.