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 ntụ ntụ kristal |
| njirimara | Ụdị nnabata infrared |
| 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% |
| Ígwè (Fe) | ≤10ppm |
| Ọla dị arọ (Pb) | ≤10ppm |
| Arsenic | ≤1pm |
| Ọnwụ na ihicha | ≤0.5% |
| Ihe fọdụrụ na mgbanye | ≤0.1% |
| Nyocha | 98.0 ~ 101.0% |
| PH | 4.5-5.5 |
