级别:BR含量:≥99.0%PH:5.4～6.1 干燥失重:≤0.50% 灼烧残渣:≤0.10% 氯化物:≤0.02% 硫酸盐:≤0.02% 铵盐:≤0.10% 重金属:≤0.001% 砷盐:≤0.0001%性状(以下信息仅供参考):白色片状结晶或粉末。溶于水、稀酸和稀碱,极微溶于95%乙醇,不溶于乙醚。相对密度1.340。熔点281℃(分解)用途:本品仅供科研,不...
英文名称:DL-Methionine;(±)-2-Amino-4-(methylmercapto)butyric acid;DL-2-Amino-4-(methylthio)butanoic acid;Acimetion 其他名称:DL-蛋氨酸;DL-2-氨基-4-甲硫基丁酸 CAS号:59-51-8 C5H11NO2S=149.21 级别:BR 含量:≥99.0% PH:5.4～6.1
DL-蛋氨酸为白色薄片状结晶或结晶性粉末。有特殊气味。味微甜。熔点281度(分解)。 10%水溶液的PH值5.6-6.1.无旋光性.对热及空气稳定.对强酸不稳定,可导致脱甲基作用. 溶于水(3.3g/100ml,25度)、稀和稀减溶液。极难溶于乙醇,几乎不溶于乙醚。 用途DL-蛋氨酸可用作增补剂 DL-蛋氨酸 NBG牌DL-蛋氨酸CAS号59...
Storage condition RT References 英文名称:DL-Methionine;(±)-2-Amino-4-(methylmercapto)butyric acid;DL-2-Amino-4-(methylthio)butanoic acid;Acimetion 其他名称:DL-蛋氨酸;DL-2-氨基-4-甲硫基丁酸 CAS号:59-51-8 C5H11NO2S=149.21 级别:BR 含量:≥99.0% PH:5.4～6.1 干燥失重:≤0.50% 灼烧残渣:...
Optically active, melting point 280 ~ 281 ° C (decomposition), soluble in water (3.3g / 100ml, 25 ° C), 10% aqueous solution pH 5.6 ~ 6.1, stable to heat and air, unstable to strong acid. Soluble in dilute acid and dilute alkali, very difficult to dissolve in ethanol, almost ...
选择适当的偶联试剂：根据实验需求，选择能够特异性地与生物素和甲硫氨酸反应的偶联试剂。优化反应条件：在温和的条件下进行偶联反应，以确保生物分子的活性和稳定性不受影响。这可能包括调整反应温度、pH值、反应时间和反应物的浓度等。纯化与鉴定：通过适当的纯化方法，如透析、离心等，去除未反应的试剂和杂质。β-环...
PH 5.6~6.1 Transmittance ≥98.0% Chloride ≤0.02% Sulfate ≤0.02% Ammonium ≤0.02% Other amino acids ≤0.5% Loss on drying ≤0.2% Residue on ignition ≤0.1% Iron ≤0.0015% Heavy metals(as Pb) ≤10ppm Arsenic ≤0.0001% Bacterial endotoxins ≤25 EU/g Function and...
3. Don't be affected by pH value, inorganic ions and organic macromolecules in digestive tract. Higher utilization ratio [Product function] 1. The bioavailability of animal feed supplement for livestock significantly better than other organic zinc. 2. Solve the problem of hoof crack ...
N-Acetyl-DL-Methionine;Methionamine CAS No.: 1115-47-5 Item No.: AA0252 Store at: RT CAS No.: 1115-47-5 C7H13NO3S=191.24 Grade: BR Content: ≥ 99.0% Loss on drying: ≤ 0.5% Heavy metal: ≤ 20ppm PH:1.7～3.0 Physicochemical properties: white crystal or crystalline powder, with ...
DL-Methionine is sometimes given as a supplement to dogs; it helps keep dogs from damaging grass by reducing the pH of the urine. Methionine is allowed as a supplement to organic poultry feed under the US certified organic program. Definition ...