S-羧甲基-L-半胱氨酸

Name: S-羧甲基-L-半胱氨酸
Brand: 济南圣和化工有限公司

CAS 638-23-3C5H9NO4SMW 179.20

S-羧甲基-L-半胱氨酸，CAS 登记号 638-23-3，由济南圣和化工有限公司现货供应，可提供纯度按批次COA提供(不公开发布) 的规格，下游主要用于化工中间体。支持样品与小批量试用，批量价格请联系我们获取，验收以批次 COA 为准。

规格参数

CAS号638-23-3

分子式C5H9NO4S

分子量179.20

熔点204 - 207 °C

LogP-3.1

纯度按批次COA提供(不公开发布)

包装按订单/批次确认(不公开发布)

应用领域化工中间体

类别化工中间体

用途与场景

化工中间体

包装与供货

包装规格按订单/批次确认(不公开发布)

纯度规格按批次COA提供(不公开发布)

储存条件密封、阴凉干燥处保存

供货周期现货/按订单安排

文件与支持

每批随货提供 COA；可按需提供 MSDS 及技术文件。邮件注明产品名称与 CAS 号，一个工作日内回复报价。

常见问题

在哪里能查到 S-羧甲基-L-半胱氨酸的 CAS 号？

本页已列出 S-羧甲基-L-半胱氨酸的 CAS 号：638-23-3，可与随货 COA 核对。

可以提供哪些规格和包装？

常见纯度为按批次COA提供(不公开发布)，包装形式为按订单/批次确认(不公开发布)，特殊规格可在询价时说明。

S-羧甲基-L-半胱氨酸一般用在什么产品里？

主要涉及化工中间体。

下单流程是怎样的？

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PubChem 公开数据

Description

S-Carboxymethyl-L-Cysteine · CAS 638-23-3 · C5H9NO4S. UNII 4252LRM78Q. Melting Point: 204 - 207 °C.

Identification

CAS Registry Number	638-23-3
PubChem CID	1080
Molecular formula	C5H9NO4S
IUPAC name	2-amino-3-(carboxymethylsulfanyl)propanoic acid
UNII (FDA)	4252LRM78Q

Computed Descriptors

Molecular Weight	179.20
XLogP3	-3.1
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	6
Rotatable Bond Count	5
Exact Mass	179.02522894
Monoisotopic Mass	179.02522894
Topological Polar Surface Area	126
Heavy Atom Count	11
Formal Charge	0

Physical & Chemical Properties

Melting Point	204 - 207 °C

Physical description & handling notes

Solid
138.2 Å² [M+Na]+ [CCS Type: DT; Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]
137.1 Å² [M+H]+ [CCS Type: DT; Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]
136.7 Å² [M+Na-2H]- [CCS Type: DT; Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]
130 Å² [M-H]- [CCS Type: DT; Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]

GHS Hazard Classification

Reported hazard statements	H302 (100%), H319 (100%)

H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]

H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

Synonyms

25390-17-4; S-(Carboxymethyl)cysteine; 5-Amino-3-thiadihexanoic acid; Carbocysteine, DL-; S-(Carboxymethyl)-(RS)-cysteine; DL-3-(Carboxymethylthio)alanine; 4252LRM78Q; Carbocysteine dl-; RefChem:1098234; 246-934-4; 2387-59-9; (RS)-Carbocisteine; S-Carboxymethylcysteine; S-(Carboxymethyl)-DL-cysteine; 2-amino-3-[(carboxymethyl)sulfanyl]propanoic acid; Thiodril

Frequently Asked Questions

What are the CAS number and molecular formula of S-Carboxymethyl-L-Cysteine?

CAS 638-23-3; molecular formula C5H9NO4S; molecular weight — g/mol.

What other names is S-Carboxymethyl-L-Cysteine known by?

25390-17-4, S-(Carboxymethyl)cysteine, 5-Amino-3-thiadihexanoic acid, Carbocysteine, DL-, S-(Carboxymethyl)-(RS)-cysteine, DL-3-(Carboxymethylthio)alanine.

Is S-Carboxymethyl-L-Cysteine classified as hazardous?

Hazard statements reported: H302, H319.

What are the key physical properties of S-Carboxymethyl-L-Cysteine?

Melting Point: 204 - 207 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.

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