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Home > Products >  L-Cysteine CAS No.:52-90-4

L-Cysteine CAS No.:52-90-4 CAS NO.52-90-4

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  • Product Details


  • 52-90-4
  • L-Cysteine
  • (+)-2-Amino-3-mercaptopropionic acid

Quick Details

  • ProName: L-Cysteine CAS No.:52-90-4
  • CasNo: 52-90-4
  • Molecular Formula: C3H7NO2S
  • Appearance: detailed see specifications
  • Application: L-Cysteine CAS No.:52-90-4, An importa...
  • DeliveryTime: Check with us according to inquiry qua...
  • PackAge: 25kgs/drum
  • Port: shanghai or Tianjin or Qingdao etc
  • ProductionCapacity: 10 Metric Ton/Month
  • Purity: 99%min
  • Storage: Stored in a cool and dry well-closed ...
  • Transportation: by air or sea
  • LimitNum: 1 Kilogram
  • Moisture Content: 0.5% max
  • Impurity: 0.5% max
  • Grade: Industrial Grade
  • Purity: 99.0%min
  • single impurity: 0.5%max



L-Cysteine CAS No.:52-90-4


Name        L-Cysteine

Synonyms        (+)-2-Amino-3-mercaptopropionic acid; L-beta-Mercaptoalanine; CySH

Molecular Structure        

Molecular Formula        C3H7NO2S

Molecular Weight        121.15

CAS Registry Number        52-90-4

EINECS        200-158-2

FEMA        3263

Melting point        220 ºC

alpha        8.75 º (c=12, 2N HCl)

Water solubility        280 g/L (25 ºC)



L-Cysteine CAS No.:52-90-4


HANGZHOU THINK CHEMICAL CO., LTD. (THINKCHEM) is an integrative corporation of trade, research and contract manufacture.

With about ten years of business experiences on the marketing & distribution, thinkchem specializes in exporting pharmaceuticals, veterinary drugs, feed additives, intermediates, fine chemicals, plants extracts, pesticides, food & nutrition additives.


Thinkchem is good at offering excellent outsourcing services to overseas customers as well as laboratory support.


Custom manufacture

Thinkchem is good at offering contract manufacture and custom synthesis under confidential agreement timely and effectively, and providing sales service from grams ,kilograms to multi-tons particularly for pharmaceuticals and their intermediates discovery and development. Thinkchem is equipped with modern lab apparatus including HPLC, GC. TLC AND NMR, motivated by a team of highly qualified personnel using these equipments.



Thinkchem is composed of chemical technicians, analytical chemists, organic chemists, and chemical engineers educated in leading universities in china. Our staff is supported by a group of consultants from academia with expertise in chemical synthesis and analytical chemistry.


1. Well-trained professional sales team dedicated to source, audit and export.


2. Well-trained R & D team equipped with new knowledge, new ideas and new insights to support product development and innovation.


3. Well-established partnership with major pharmaceutical and chemical companies in china.


4. Wide range of products and efficient regulatory documentation offered to customers.





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