4-氯苯丙氨酸

Name: 4-氯苯丙氨酸
Brand: 济南圣和化工有限公司

CAS 1991-78-2C9H10ClNO2MW 199.63

本页收录 4-氯苯丙氨酸，CAS 登记号为 1991-78-2，分子式 C9H10ClNO2，分子量 199.63，归类于有机化学品。作为主营产品之一，济南圣和化工有限公司可提供从公斤级到吨级的稳定供货，随货附 COA 与质检资料。

产品概览

CAS号	1991-78-2
分子式	C9H10ClNO2
分子量	199.63
熔点	238-240 °C
LogP	log Kow = -0.48
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	有机化学品
类别	有机化学品

应用领域

有机化学品

4-氯苯丙氨酸主要应用于有机化学品。具体使用工况下的添加量与规格要求，欢迎与技术团队沟通确认。

包装与储存

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

运输常规化工运输

样品可协商提供

交期现货/按订单安排

供应说明：4-氯苯丙氨酸常规包装为按订单/批次确认(不公开发布)，储存时应密封置于阴凉干燥处，避免与氧化剂混放。济南圣和化工有限公司支持国内物流发货，大货交期与运费以订单确认为准。

质量与文件

每批产品随货提供 COA（分析证书）；可按需提供 MSDS/技术数据表及第三方检测报告。纯度与包装以批次 COA 及订单确认为准。

关于供应商

作为化工原料供应服务商，济南圣和化工有限公司长期服务于化工贸易、食品添加、医药中间体、日化原料等行业的采购需求。除 4-氯苯丙氨酸外，您还可以在站内按 CAS 号或产品分类检索更多品类，获取规格与报价。

常见问题

4-氯苯丙氨酸的 CAS 号是多少？

4-氯苯丙氨酸的 CAS 号为 1991-78-2。

该产品的纯度和包装规格是什么？

常规纯度规格为按批次COA提供(不公开发布)，包装为按订单/批次确认(不公开发布)，随货提供 COA。

4-氯苯丙氨酸有什么用途？

主要应用于有机化学品。

如何购买或获取报价？

请发送邮件至 info@591daili.com 或通过 WhatsApp 联系，注明产品名称、CAS 号与需求数量，一个工作日内回复报价。供应商：济南圣和化工有限公司。

PubChem 公开数据

Description

4-chlorophenylalanine · CAS 1991-78-2 · C9H10ClNO2. UNII R5J7E3L9SP. Melting Point: 238-240 °C; LogP: log Kow = -0.48; Dissociation Constants: pKa1 = 2.08.

Identification

CAS Registry Number	1991-78-2
PubChem CID	4652
Molecular formula	C9H10ClNO2
IUPAC name	2-amino-3-(4-chlorophenyl)propanoic acid
UNII (FDA)	R5J7E3L9SP

Computed Descriptors

Molecular Weight	199.63
XLogP3	-0.5
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	3
Exact Mass	199.0400063
Monoisotopic Mass	199.0400063
Topological Polar Surface Area	63.3
Heavy Atom Count	13
Formal Charge	0

Physical & Chemical Properties

Melting Point	238-240 °C
LogP	log Kow = -0.48
Dissociation Constants	pKa1 = 2.08

Physical description & handling notes

Crystals from methanol
pKa1 = 2.17 (carboxylic acid); pKa2 = 9.11(amine)
144.46 Å² [M+H]+ [CCS Type: TW; Method: calibrated with polyalanine and drug standards]
When heated to decomposition, it emits toxic fumes of NOx and Cl-

GHS Hazard Classification

Reported hazard statements	H301 (100%), H317 (100%)

H301 (100%): Toxic if swallowed [Danger Acute toxicity, oral]

H317 (100%): May cause an allergic skin reaction [Warning Sensitization, Skin]

Documented Uses

Competitive inhibitor of the serotonin (5-HT) synthesis enzyme tryptophan hydroxylase
... The combined administration of phenylalanine (phe) and p-chlorophenylalanine (PCPA) /are models for/... research into the pathogenesis and treatment of PKU. ...
Phenylalanine, 4-chloro-: INACTIVE
Enzyme Inhibitors; Serotonin Antagonists
The clinical and biochemical features of a patient with flushing and severe diarrhea due to the carcinoid syndrome are described. The patient had a paradoxical response to the tryptophan hydroxylase inhibitor parachlorophenylalanine with complete abolition of flushing and no effect on the diarrhea. Treatment with this drug was limited by adverse effects. /Former/
... When the 5-HT concentration in sexually deficient men is sufficiently decreased with parachlorophenylalanine (PCPA) treatment and testosterone levels increased following its administration, a vivid sexual stimulation appears in about half of the untractable cases. Similar results are observed by substituting testosterone with monoamine oxydase inhibitor (MAOI) in PCPA-treated volunteers. . ...

Synonyms

Fenclonine; 7424-00-2; 4-Chloro-DL-phenylalanine; 2-amino-3-(4-chlorophenyl)propanoic acid; 4-Chlorophenylalanine; Fenchlonine; Fenclonin; DL-p-Chlorophenylalanine; DL-PCPA; Fenclonina; DL-3-(p-Chlorophenyl)alanine; para-Chlorophenylalanine; Fencloninum; Alanine, 3-(4-chlorophenyl)-, DL-; CP-10188; CP-10,188

Frequently Asked Questions

What are the CAS number and molecular formula of 4-chlorophenylalanine?

CAS 1991-78-2; molecular formula C9H10ClNO2; molecular weight — g/mol.

What other names is 4-chlorophenylalanine known by?

Fenclonine, 7424-00-2, 4-Chloro-DL-phenylalanine, 2-amino-3-(4-chlorophenyl)propanoic acid, 4-Chlorophenylalanine, Fenchlonine.

Is 4-chlorophenylalanine classified as hazardous?

Hazard statements reported: H301, H317.

What are the key physical properties of 4-chlorophenylalanine?

Melting Point: 238-240 °C; LogP: log Kow = -0.48; Dissociation Constants: pKa1 = 2.08.

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.