奥沙普嗪

Name: 奥沙普嗪
Brand: 济南圣和化工有限公司

CAS 21256-18-8C18H15NO3MW 293.3

济南圣和化工有限公司现供应医药中间体及原料药——奥沙普嗪（CAS 21256-18-8），分子式 C18H15NO3，分子量 293.3。本页理化参数仅供参考，实际常规纯度按批次COA提供(不公开发布)，以批次 COA 及订单确认为准，支持批量采购与长期供货协议。

产品概览

CAS号	21256-18-8
分子式	C18H15NO3
分子量	293.3
熔点	158-159 °C
LogP	4.19
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	医药中间体及原料药
类别	医药中间体及原料药

应用领域

医药中间体及原料药

奥沙普嗪在医药中间体及原料药领域使用广泛。采购前请确认纯度等级与包装形式，以批次 COA 为验收依据。

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

采购提示：本产品按按订单/批次确认(不公开发布)起订发货，收到货物后请先核对包装完好性再行入库。储存条件为阴凉干燥、密封保存；如需 MSDS 或运输说明，可在询价时一并索取。

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

选择济南圣和化工有限公司的理由：产品信息透明（含 CAS、分子式、理化参数）、报价响应快（一个工作日内）、单证齐全（COA/MSS/质检资料按需提供）、支持批量与长期协议供货。如需奥沙普嗪以外的配套原料，也欢迎一并列出需求清单。

常见问题

奥沙普嗪的 CAS 号是多少？

奥沙普嗪的 CAS 号为 21256-18-8。

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。

奥沙普嗪有什么用途？

主要应用于医药中间体及原料药。

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

Oxaprozin · CAS 21256-18-8 · C18H15NO3. UNII MHJ80W9LRB. Melting Point: 158-159 °C; Melting Point: 160.5 to 161.5 °C; Melting Point: 158 - 159 °C.

Identification

CAS Registry Number	21256-18-8
PubChem CID	4614
Molecular formula	C18H15NO3
IUPAC name	3-(4,5-diphenyl-1,3-oxazol-2-yl)propanoic acid
UNII (FDA)	MHJ80W9LRB

Computed Descriptors

Molecular Weight	293.3
XLogP3	4.2
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	5
Exact Mass	293.10519334
Monoisotopic Mass	293.10519334
Topological Polar Surface Area	63.3
Heavy Atom Count	22
Formal Charge	0

Physical & Chemical Properties

Melting Point	158-159 °C
Melting Point	160.5 to 161.5 °C
Melting Point	158 - 159 °C
Solubility	3.25e-02 g/L
LogP	4.19
LogP	log Kow = 4.19
LogP	3.7
LogP	2.82
Dissociation Constants	4.3
Dissociation Constants	pKa = 4.3

Physical description & handling notes

Solid
Crystals from methanol
Insoluble
Slightly soluble in alcohol. Insoluble in water
When heated to decomposition it emits toxic fumes of /Nitrogen oxide/.
169.7 Å² [M+H]+ [CCS Type: TW; Method: calibrated with polyalanine and drug standards]

GHS Hazard Classification

Reported hazard statements	H302 (25%), H315 (25%), H319 (25%), H411 (25%), H412 (25%), H413 (25%)

H302 (25%): Harmful if swallowed [Warning Acute toxicity, oral]

H315 (25%): Causes skin irritation [Warning Skin corrosion/irritation]

Documented Uses

Therapeutic Category: Anti-inflammatory
Consumption (g per capita) in the USA (2002): 0.067
Preparation: FR 2001036 (1969 Inst Farm Serano); ... K. Brown GB 1206403 and US 3578671 (1970, 1971 to Wyeth)
Used to relieve the inflammation, swelling, stiffness, and joint pain associated with rheumatoid arthritis and osteoarthritis.
Oxaprozin is a long acting nonsteroidal antiinflammatory drug (NSAID) available by prescription only which is used for therapy of chronic arthritis. Oxaprozin has been linked to rare instances of idiosyncratic drug induced liver disease.
Breast Feeding; Lactation; Milk, Human; Analgesic Agents; Anti-inflammatory Agents, Nonsteroidal

Synonyms

oxaprozin; 21256-18-8; Daypro; 3-(4,5-Diphenyloxazol-2-yl)propanoic acid; Alvo; Oxaprozine; Oxaprozinum; Deflam; Oxaprozina; 4,5-Diphenyl-2-oxazolepropanoic acid; 4,5-Diphenyl-2-oxazolepropionic acid; WY-21743; WY-21,743; 2-Oxazolepropanoic acid, 4,5-diphenyl-; Duraprox; DTXSID1045118

Frequently Asked Questions

What are the CAS number and molecular formula of Oxaprozin?

CAS 21256-18-8; molecular formula C18H15NO3; molecular weight — g/mol.

What other names is Oxaprozin known by?

oxaprozin, 21256-18-8, Daypro, 3-(4,5-Diphenyloxazol-2-yl)propanoic acid, Alvo, Oxaprozine.

Is Oxaprozin classified as hazardous?

Hazard statements reported: H302, H315, H319, H411, H412.

What are the key physical properties of Oxaprozin?

Melting Point: 158-159 °C; Melting Point: 160.5 to 161.5 °C; Melting Point: 158 - 159 °C; Solubility: 3.25e-02 g/L.

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.