L-Cysteine 99% | 52-90-4
Hōʻike huahana:
L-cysteine, he amino acid i loaʻa mau i nā mea ola. ʻO ia kekahi o nā ʻakika α-amino i loko o ka sulfur. Huli ia i ka poni (ka waihoʻoluʻu ma muli o SH) i mua o ka nitroprusside. Aia ia i loko o nā protein a me ka glutathione. Hiki iā ia ke hana i nā mea hoʻoheheʻe ʻole me nā ion metala e like me Ag+, Hg+, a me Cu+. mercaptide. ʻO ia hoʻi, RS-M', RSM"-SR (M', M" he mau metala monovalent a me divalent.
ʻO ke kumu molekala C3H7NO2S, ke kaumaha molekala 121.16. Nā kristal kala ʻole. Hiki ke hoʻoheheʻe ʻia i ka wai, ka waikawa acetic a me ka amonia, hiki ʻole ke hoʻoheheʻe ʻia i ka etera, acetone, ethyl acetate, benzene, carbon disulfide a me ka carbon tetrachloride. Hiki ke hoʻoheheʻe ʻia i cystine e ka ea i loko o nā haʻina alkaline kūʻokoʻa a nāwaliwali.
ʻO ka maikaʻi o L-Cysteine 99%:
1. Hoʻohana nui ʻia i ka lāʻau lapaʻau, nā mea hoʻonaninani, ka noiʻi biochemical, etc.
2. Hoʻohana ʻia ia i ka berena e hoʻoikaika i ka hoʻokumu ʻana o ka gluten, hoʻoikaika i ka fermentation, hoʻokuʻu ʻia, a pale i ka ʻelemakule.
3. Hoʻohana ʻia i loko o nā wai maoli e pale ai i ka hoʻomake ʻana o ka huaora C a pale i ka wai mai ka browning. He hopena detoxification kēia huahana a hiki ke hoʻohana ʻia no ka make ʻana o ka acrylonitrile a me ka ʻawaʻawa ʻala.
4. ʻO kēia huahana pū kekahi i ka hopena o ka pale ʻana i ka pōʻino o ka radiation i ke kino o ke kanaka, a he lāʻau hoʻi ia no ka mālama ʻana i ka bronchitis, ʻoi aku ka nui o ka lāʻau lapaʻau hoʻomaha phlegm (hoʻohana nui ʻia ma ke ʻano o ka acetyl L-cysteine methyl ester. Cosmetics Hoʻohana nui ʻia no ka wai nani, perm lotion, sunscreen cream, etc.
Nā hōʻailona ʻenehana o L-Cysteine 99%:
Mea Hoʻomāliʻi Hōʻike
ʻO ke ʻano o ka pauka keʻokeʻo keʻokeʻo a i ʻole ka pauka crystalline
Identification Infrared absorption spectrum
Ka hoʻololi kikoʻī[a]D20° +8.3°~+9.5°
Kūlana o ka hoʻonā ≥95.0%
Ammonium (NH4) ≤0.02%
Klorida (Cl) ≤0.1%
Sulfate (SO4) ≤0.030%
Hao (Fe) ≤10ppm
Nā metala kaumaha (Pb) ≤10ppm
Arsenic ≤1ppm
Pohō ma ka maloʻo ≤0.5%
Ke koena ma ka ʻāʻī ≤0.1%
ʻIke 98.0~101.0%
PH 4.5~5.5
