L-Cysteine 99% | 52-90-4
Nkọwa ngwaahịa:
L-cysteine , amino acid a na-ahụkarị na ihe ndị dị ndụ. Ọ bụ otu n'ime sulfur nwere α-amino acid. Ọ na-atụgharị na-acha odo odo (agba n'ihi SH) n'ihu nitroprusside. Ọ dị n'ọtụtụ protein na glutathione. Ọ nwere ike ịmepụta ogige ndị na-adịghị edozi ya na ion ígwè dị ka Ag+, Hg+, na Cu+. mercaptide. Ya bụ, RS-M', RSM"-SR (M', M" bụ monovalent na divalent ọla, karị).
Usoro ihe omimi C3H7NO2S, arọ molekul 121.16. Kristal na-enweghị agba. Na-agbaze n'ime mmiri, acetic acid na amonia, nke na-adịghị edozi na ether, acetone, ethyl acetate, benzene, carbon disulfide na carbon tetrachloride. Enwere ike oxidized na cystine site na ikuku na-anọpụ iche na ngwọta alkaline na-adịghị ike.
Mmetụta nke L-Cysteine 99%:
1. A na-ejikarị na nkà mmụta ọgwụ, ihe ịchọ mma, nchọpụta biochemical, wdg.
2. A na-eji ya na achịcha na-akwalite nhazi nke gluten, kwalite ịgba ụka, ịhapụ ebu, ma gbochie ịka nká.
3. A na-eji ihe ọṅụṅụ eke eme ihe iji gbochie oxidation nke vitamin C ma gbochie ihe ọṅụṅụ si browning. Ngwaahịa a nwere mmetụta detoxification na enwere ike iji ya mee ihe maka nsị acrylonitrile na nsị aromatic acid.
4. Ngwaahịa a nwekwara mmetụta nke igbochi radiation mmebi ahụ mmadụ, ma bụrụkwa ọgwụ maka ọgwụgwọ bronchitis, karịsịa dị ka ọgwụ na-ebelata phlegm (nke a na-ejikarị eme ihe n'ụdị acetyl L-cysteine methyl ester. Cosmetics). a na-ejikarị mma maka mma mmiri, ude mmiri, ude anyanwụ, wdg.
Ngosipụta nka nka nke L-Cysteine 99%:
Ihe nyocha Nkọwapụta
Ọdịdị kristal ọcha ntụ ntụ ma ọ bụ kristal ntụ ntụ
Identification infrared absorption ụdịdị dị iche iche
Ntụgharị pụrụ iche[a]D20° +8.3°~+9.5°
Ọnọdụ ngwọta ≥95.0%
Ammonium (NH4) ≤0.02%
Chloride (Cl) ≤0.1%
Sulfate (SO4) ≤0.030%
Iron (Fe) ≤10ppm
Ọla dị arọ (Pb) ≤10ppm
Arsenic ≤1ppm
Ọnwụ na nkụ ≤0.5%
Ihe fọdụrụ na mgbanye ≤0.1%
Nyocha 98.0 ~ 101.0%
PH 4.5-5.5
