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L-Cysteine base

BGC Id:	251067004466
CAS No:	52-90-4
Synonyms:	fema 3263 ; thioserine ; cysteine ; nsc-8746 ; e 920 ; h-cys-oh ; cysh ; cys ; l-cys ; cystein
Molecular Formula:	C3H7NO2S
Molecular Weight:	121.16
EINECS:	200-158-2

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The following 2 notable providers have been checked and can be recommended.

Purestar Chem

Nantong Xindao Biotech

What other providers are available for CAS 52-90-4?

The last intensive check and update was carried out on 2025/09/17.

Identify

Synonyms:

fema 3263 ; thioserine ; cysteine ; nsc-8746 ; e 920 ; h-cys-oh ; cysh ; cys ; l-cys ; cystein

CAS:

52-90-4

EINECS:

200-158-2

Molecular Formula:

C3H7NO2S

MDL:

MFCD00064306

Properties

Molecular Weight:

121.16 g·mol−1

Density:

1.68 g/cm³

Melting point:

220 °C (dec.)(lit.)

Boiling point:

254 °C

Solubility:

H₂O: 25 mg/mL

Suppliers

Purestar Chem Enterprise Co., Ltd.

Company type: Supplier

We sell Magnesium hydrogen phosphate 3-hydrate as well. Purestar Chem Enterprise Co., Ltd. (also known as Huzhou Purestar Biochem Co.,Ltd),is located in Huzhou,150km from Shanghai,we have our own factory in Zhejiang,which covers an area of 3,5000 m2,with complete R&D,manufacture,sales,QC,QA,warehouse departments.And equipped with complete extraction, fermentation, purification etc.facilities, and HPLC, UV, GC, spectrophotometer and other quality control instrument. Meanwhille,as we continue to grow and expand since 2005,we also e ...

Country: P.R.China Phone: +86-572-2157374 Telefax: +86-572-2146389

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Nantong Xindao Biotech Ltd

Company type: Leading producer

Country: P.R.China
Phone: +86 19033786557

XINDAO is a world leading biochemical company formed by a professional team.The company specializes in the production, development and sales of animal health, crop science, nutrition and health care, skin care raw materials, fine chemicals and other products. At present, more than 300 kinds of products can be mass produced, which are widely used in chemical industry, health, agriculture, animal husbandry, biochemical research and other high-end fields. XINDAO pays attention ...

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Safety Information

Hazard Symbols: Xn, Xi

Europe standard Hazard pictograms, code and definition

Hazard Classes:

Risk Codes:

22-36/37/38-20/21/22 (R)

Safety Codes:

36-37/39-26 (S)

WGK Germany:

RTECS:

HA1600000

Storage temperature:

Store at RT.

The following providers cannot be verified precisely. The companies have offered the product in the past, but despite all care, the companies could not confirm it 100 percent!

Buckton Scott USA, Inc.

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What other providers are available for CAS 52-90-4?

In addition to the providers presented here for L-Cysteine base with the CAS number 52-90-4, there are other 145 providers with slightly different product names available for this CAS number.