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| 融点 | 175°C | | 比旋光度 | +6.0～+7.5゜ (20℃/D)(c=8,6mol/l HCl)(calculated on the dried basis) | | 比重(密度) | 1.54 g/cm3 | | 蒸気圧 | <0.1 hPa (20 °C) | | 屈折率 | 6 ° (C=8, 1mol/L HCl) | | 貯蔵温度 | Keep in dark place,Inert atmosphere,Room temperature | | 溶解性 | H2O: 1 M at 20 °C, clear, colorless | | 外見 | Solid | | 色 | White | | PH | 0.8-1.2 (100g/l, H2O, 20℃) | | 酸塩基指示薬変色域(pH) | 1 - 2 | | 光学活性 (optical activity) | [α]20/D +5.6±0.3°, c = 5% in 5 M HCl | | 水溶解度 | Soluble in cold water. | | Sensitive | Hygroscopic | | 極大吸収波長 (λmax) | λ: 260 nm Amax: 1.0
λ: 280 nm Amax: 0.3 | | Merck | 14,2781 | | BRN | 5158059 | | 安定性： | Stable. Incompatible with strong oxidizing agents, most common metals, hydrogen chloride. | | LogP | 0.235 (est) | | CAS データベース | 7048-04-6(CAS DataBase Reference) |
| | L-システイン塩酸塩一水和物 Usage And Synthesis |
| 外観 | 白色の結晶又は結晶性の粉末 | | 溶解性 | 水に極めて溶けやすく、エタノールにやや溶けやすく、ジエチルエーテルにほとんど溶けない。 | | 効能 | アミノ酸補充薬 | | 化学的特性 | white crystalline powder
 | | 使用 | L-Cysteine hydrochloride monohydrate has been used as a component of yeast dropout media for culturing yeasts. It has also been used as a component of differential reinforced clostridial broth (DRCM) for the isolation of clostridia. | | 使用 | L-Cysteine hydrochloride monohydrate is used as a precursor in food, pharmaceutical and personal care products. It is actively involved in the production of flavors such as meat flavor obtained by reacting with sugars. It plays an important role as a key raw material for the manufacture of N-acetyl-L-cysteine, S-carboxymethyl-L-cysteine and L-cysteine base. It is involved in the treatment of liver disease as an antioxidant and antidote. Being an essential amino acid, it used as animal feed especially for sheep, which is responsible the growth of wool. | | 使用 | L-Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. L-Cysteine is commonly use
d as a precursor in the food and pharmaceutical industries. L-Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavours. | | 定義 | ChEBI: A hydrate that is the monohydrate form of L-cysteine hydrochloride. | | 一般的な説明 | This product is supplied from Wacker FERMOPURE? material, but is sold for R&D use only, not for drug, household or other uses. | | Biochem/physiol Actions | NMDA glutamatergic receptor antagonist. | | 純化方法 | Likely impurities are cystine and tyrosine. Crystallise the salt from MeOH by adding diethyl ether, or from hot 20% HCl. Dry it under vacuum over P2O5. Hygroscopic. [Beilstein 4 III 1580, 1600.] |
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