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L-Cysteine,S-(carboxymethyl)- cas no:638-23-3

Synonyms: Alanine,3-[(carboxymethyl)thio]-, L- (6CI,8CI);(2R)-2-Amino-3-[(carboxymethyl)thio]propionic acid;(L)-2-Amino-3-(carboxymethylthio)propionicacid;(R)-S-(Carboxymethyl)cysteine;3-[(Carboxymethyl)thio]-L-alanine;AHR3053;Bronchokod;Carbocysteine;Chilvax;L-(Carboxymethyl)cysteine;LJ 206;Lisil;Lisomucil;Loviscol;Muciclar;Mucocis;Mucodyne;Mucofan;Mucolase;Mucolex;Pectox;Pulmoclase;Reomucil;Rhinathiol;Rhinatiol;S-(Carboxymethyl)-(R)-cysteine;Siroxyl;Thiodril;Transbronchin;L-Carbocysteine(S-CMC);

Identification
NameL-Cysteine,S-(carboxymethyl)-
CAS638-23-3
SynonymsAlanine,3-[(carboxymethyl)thio]-, L- (6CI,8CI);(2R)-2-Amino-3-[(carboxymethyl)thio]propionic acid;(L)-2-Amino-3-(carboxymethylthio)propionicacid;(R)-S-(Carboxymethyl)cysteine;3-[(Carboxymethyl)thio]-L-alanine;AHR3053;Bronchokod;Carbocysteine;Chilvax;L-(Carboxymethyl)cysteine;LJ 206;Lisil;Lisomucil;Loviscol;Muciclar;Mucocis;Mucodyne;Mucofan;Mucolase;Mucolex;Pectox;Pulmoclase;Reomucil;Rhinathiol;Rhinatiol;S-(Carboxymethyl)-(R)-cysteine;Siroxyl;Thiodril;Transbronchin;L-Carbocysteine(S-CMC);
EINECS(EC#)211-327-5
Molecular FormulaC5H9NO4S
Molecular Weight179.19426
Chemical Properties
Appearancewhite to slightly off-white amorphous powder
alpha-31 o (C=1, 10% NAH2CO3)
storage temp2-8°C
Safety Data

Hazard Xi: Irritant;
Risk R36/37/38
Safety

Moderately toxic by intraperitoneal route. Mildly toxic by ingestion. Experimental reproductive effects. When heated to decomposition it emits toxic fumes of SOx and NOx.
Hazard Codes: IrritantXi
WGK Germany: 2
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 24/25-36-26
S24/25:Avoid contact with skin and eyes.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.


Toxicity
1.    

ipr-rat LD50:7800 mg/kg

    NIIRDN    “Drugs in Japan. Ethical Drugs, 6th Edition 1982” Edited by Japan Pharmaceutical Information Center. 6 (1982),190.
2.    

scu-rat LD50:10,300 mg/kg

    NIIRDN    “Drugs in Japan. Ethical Drugs, 6th Edition 1982” Edited by Japan Pharmaceutical Information Center. 6 (1982),190.
3.    

orl-mus LD50:8400 mg/kg

    NIIRDN    “Drugs in Japan. Ethical Drugs, 6th Edition 1982” Edited by Japan Pharmaceutical Information Center. 6 (1982),190.
4.    

ipr-mus LD50:1433 mg/kg

    YKKZAJ    Yakugaku Zasshi. Journal of Pharmacy. 94 (1974),1419.
5.    

scu-mus LD50:9 g/kg

    NIIRDN    “Drugs in Japan. Ethical Drugs, 6th Edition 1982” Edited by Japan Pharmaceutical Information Center. 6 (1982),190.

6.  RTECS  AY4342000
RTECS#: CAS# 638-23-3: AY4342000
LD50/LC50: RTECS:
CAS# 638-23-3: Oral, mouse: LD50 = 8400 mg/kg;
Oral, rat: LD50 = >15 gm/kg;
Carcinogenicity: S-Carboxymethyl-L-cysteine - Not listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65.
Other: The toxicological properties have not been fully investigated. See actual entry in RTECS for complete information.

supplier list

Nantong Chem-Tech.(Group) Co., Ltd.
Tel:+86-(513)-8508-1108, 8533-5860
Address: 7/F Beihao BLDG, No. 91,Zhongxiu Middle Road, Nantong 226001,
Song's PharmChem Inc.
Tel:+86-(21)-6612-5360
Address:
Wuhan Zhongfu Bio-Tech Co., Ltd.
Tel:+81-(3)-35444889
Address: 4-14-4-302, Ginza, Chuo-ku, Tokyo,
S. V. Chem Intermediates (P) Ltd.
Tel:9940045115
Address: No 52, SIDCO Industrial Estate, Aalathur, Thiruporur, Kancheepuram District, Tamil Nadu 603 110,
Discovery Fine Chemicals Limited
Tel:+44-(202)-521225
Address: Discovery Court, 29 Nursery Road, Bournemouth, Dorset BH9 3AT,
Promy International Group
Tel:+1-(888)-918-3888, 510-758-1388
Address: 130 Travalini Court, El Sobrante, California 94803,
Shine Star ( Hubei ) Biological Engineering Co., Ltd.
Tel:+86-(27)-8578-6222
Address: Room 4110, New World International Trade Centre, 568 Jianshe Avenue, Hankou, Wuhan, Hubei 430022,
Sichuan Sangao Biochemical Co., Ltd.
Tel:+86-(21)-56490412
Address: No.329, Mid- Yidu Avenue, Longquan-Yi District, Chengdu 610100,
TaiZhou HiKong Chemical Co., Ltd.
Tel:+86-18967213045,13957694715
Address: Taizhou Economic Technical Development Zone, Taizhou, Zhejiang 318000,
Beijing HuameiHuli Biochem Ltd
Tel:010-86181995
Address: Beijing TongZhou District
Hangzhou UNIWISE International Co.,Ltd.
Tel:+86-571-28819531
Address: E-19F, Dongqiing Building, 52 Qingchun Rd, Hangzhou, China
YiPeng Chemical
Tel:571 85376369
Address: Building 4,High-tech Industrial Park,No. 588 Feijiatang Road,Xiacheng District, Hangzhou, China
Siwei Development Group Ltd
Tel:86-571-57109529
Address: Room 34-1 Xiaoshan Hangzhou China
Shanghai Hope Chem Co., Ltd.
Tel:86-21-61723543
Address: Room508, Building1, No.88 CaiLun Road Zhangjiang H
HangZhou Puris Biotechnology Ltd.
Tel:86-571-18663102648
Address: Wantang RD262, Hangzhou,Zhejiang P.R,China

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