L-Cysteine

CAS No.	52-90-4
Chemical Name:	L-Cysteine
Synonyms:	CYS;CYSH;E 920;L-Cys;Cystein;NSC-8746;CYSTEINE;H-CYS-OH;FEMA 3263;Thioserine
CBNumber:	CB7388480
Molecular Formula:	C3H7NO2S
Formula Weight:	121.16
MOL File:	52-90-4.mol

L-Cysteine Property

mp :	220 °C (dec.)(lit.)

alpha :

8.75 º (c=12, 2N HCl)

FEMA :

3263

refractive index :

8.8 ° (C=8, 1mol/L HCl)

storage temp. :

Store at RT.

solubility :

H₂O: 25 mg/mL

Water Solubility :

280 g/L (25 ºC)

Sensitive :

Air Sensitive

Merck :

14,2781

BRN :

1721408

Stability::

Stability Stable, but may be air sensitive. Incompatible with oxidizing agents, bases.

CAS DataBase Reference:

52-90-4(CAS DataBase Reference)

NIST Chemistry Reference:

L-Cysteine(52-90-4)

EPA Substance Registry System:

L-Cysteine(52-90-4)

Safety

Hazard Codes :

Xn,Xi

Risk Statements :

22-36/37/38-20/21/22

Safety Statements :

36-37/39-26

WGK Germany :

RTECS :

HA1600000

F :

10-23

HS Code :

29309012

Hazardous Substances Data:

52-90-4(Hazardous Substances Data)

L-Cysteine Chemical Properties,Usage,Production

Chemical Properties
White crystalline powder

Usage
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.

L-Cysteine Preparation Products And Raw materials

Raw materials
HYDROGEN SULFIDE Ammonium hydroxide Α-PROTEIN L-Cystine Tin granular

Preparation Products
Chiral 2，2-Disubstituted thiaprolinol derivatives N-Acetyl-cysteine D-Biotin S-Carboxymethyl-L-cysteine 6-BROMOMETHYL-PTERIDINE-2,4-DIAMINE HBR Ranitidine hydrochloride Papain L-Cysteine hydrochloride anhydrous Carbocistein L-Cysteine hydrochloride monohydrate

L-Cysteine Suppliers Global( 325)Suppliers

Supplier	Tel	Fax	Email	Country	ProdList	Advantage
J & K SCIENTIFIC LTD.	--	--	jkinfo@jkchemical.com;market3@jkchemical.com	CHINA	96847	76
Meryer (Shanghai) Chemical Technology Co., Ltd.	+86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-59487313(Beijing)	+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing)	sh@meryer.com	CHINA	40407	62
future industrial shanghai co., ltd	021-61552785，400-0066-400	021-55660885	sales@jonln.com	CHINA	2037	65
Alfa Aesar	400-610-6006; 021-67582000	021-67582001/03/05	saleschina@alfa-asia.com	CHINA	30333	84
TCI (Shanghai) Development Co., Ltd.	--	--	info@chemicalbook.com	CHINA	22159	81
Beijing dtftchem Technology Co., Ltd.	13651141086; 86(10)60275028、60275820	86 (10) 60270825	dtftchem@sina.com	CHINA	4703	62
BeiJing Hwrk Chemicals Limted	4006990298 010-57411839 020-31335234 021-51691807	010-87653215 0757-86311057 021-55236763	sales@hwrkchemical.com	CHINA	12649	55
Energy Chemical	021-58432009 / 400-005-6266	021-58436166-800	info@energy-chemical.com	CHINA	44198	61
GL Biochem (Shanghai) Ltd	86-21-61263452 (tel), 86-13641803416（mobile）	86-21-61263399	ymbetter@glbiochem.com	CHINA	9560	64
Beijing Ouhe Technology Co., Ltd	+86-10-4006331231;+86-10-51280831;+86-10-82967028	+86-10-82967029	sales@ouhechem.com	CHINA	10815	60

52-90-4(L-Cysteine)Related Search:

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