L-Cysteine

Basic Info:

  • Chemical Synonym(s): H-CYS-OH; L-Cys; L-Cysteine; CYSH; E 920; Expand
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  • CAS Number: 52-90-4
  • Chemical Formula:

    C 3 H 7 NO 2 S

  • MSDS: Download

Characteristics: 

Density
1.334 g/cm3
Boiling Point
293.9ºC at 760 mmHg
Melting Point
220ºC
Flash Point
131.5ºC
Solubility
H2O: 25 mg/mL
Pka
1.92(at 25℃)
PH
4.5-5.5 (100g/l, H2O, 20℃)
Water Solubility
280 g/L (25 ºC)
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We help you source L-Cysteine in China

Our Advantages:

我们目前经营硫辛酸、γ-羟基丁酸钙和透明质酸。

我们在氨基酸的供应链上有很大的优势,一个好的氨基酸厂需要有发酵优势,成本高,门槛高,环保要求也高。

我们了解中国的每一个氨基酸工厂,可以为您提供最准确的信息。

We have a 20+ year track record of working with suppliers in China and rating reports on them, and we keep our suppliers updated with the latest news so our customers can get the latest supplier reports. We know the market well and have early warning notifications on upstream raw material prices to help you build a stable supply chain.

When selecting suppliers, our procurement specialists will audit the qualification of suppliers, conduct thorough investigations such as field visits and sample testing, and make ratings to ensure the authenticity and legality of supplier information.

We have a long-term stable cooperation with GLP laboratories, encounter customer test results and supplier test results do not match the situation, we will commission a third party to test to ensure the accuracy, authenticity and reliability of the experimental results. In this way, we can effectively control the product quality problems.

We have a long-term cooperative warehouse and can follow up packaging and labeling according to safety regulations and customer requirements. In order to effectively prevent damage to the goods in transit, we have prepared various reinforcement measures and packaging solutions.

We have a number of international freight companies with whom we have long-standing cooperation, and we can choose several route options according to the customer's requirements. For more difficult or urgent orders, we will prepare several alternative solutions to ensure safe and timely delivery.

 

We promise to immediately and unconditionally exchange or return the goods if they have quality problems. Our employees who deal with after-sales issues have many years of international work experience and are familiar with various processes in multinational work, so they can communicate and deal with after-sales issues without any obstacles.

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Introduction:

L-半胱氨酸是一种氨基酸,被称为2-氨基-4-(2-羧乙基)咪唑,在化学工业中,它通常被称为吡唑尿酸。

它是半胱氨酸的衍生物。其物理性质为白色结晶粉末,微有气味,可溶于水、甲醇和乙醇。

它通常存在于人的头发、胶原蛋白、羽毛、丝绸和羊毛中。它是氨基酸 L-半胱氨酸的前体,可以通过水解酪蛋白和使用谷氨酸棒杆菌的突变菌株发酵产生。它由密码子 UGU 和 UGC 编码,通常作为肽键的一部分存在于蛋白质中。

Applications:

L-半胱氨酸在不同化学品和食品成分的制造中具有广泛的用途。 

它用于电影行业,使火中的烟雾看起来更逼真。在化肥的制造中,它用作植物生长刺激剂。

在护肤产品的制造中,它被用作保湿剂和皮肤保护剂。用于制造乙烯基树脂和制备人血清白蛋白。

它是肉汤块实践中常用的食品添加剂。它是植物生长的良好氮源。主要用于改善食品中面包及相关烘焙产品的面团和面筋和泡沫和体积。

L-半胱氨酸在药物中的有效用途是用于生产去屑洗发水和护发产品,以及治疗脂溢性皮炎、银屑病、湿疹等头发和皮肤疾病。

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