马来酸单乙酯； 90%，CAS 登记号 3990-03-2，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，下游主要用于有机化学品。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。
有机化学品
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。
本页已列出 马来酸单乙酯； 90% 的 CAS 号：3990-03-2，可与随货 COA 核对。
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。
主要涉及有机化学品。
来信 info@591daili.com 或 WhatsApp 联系，提供产品名称、CAS 号与数量，确认价格与交期后即可安排发货，验收以批次 COA 为准。
Maleicacidmonoethylester; 90% · CAS 3990-03-2 · C6H8O4. UNII AK5N1DQX7U. Melting Point: 66 - 68 °C.
| CAS Registry Number | 3990-03-2 |
|---|---|
| PubChem CID | 5354457 |
| Molecular formula | C6H8O4 |
| IUPAC name | (Z)-4-ethoxy-4-oxobut-2-enoic acid |
| UNII (FDA) | AK5N1DQX7U |
| Molecular Weight | 144.12 |
|---|---|
| XLogP3 | 0.2 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 4 |
| Exact Mass | 144.04225873 |
| Monoisotopic Mass | 144.04225873 |
| Topological Polar Surface Area | 63.6 |
| Heavy Atom Count | 10 |
| Formal Charge | 0 |
| Melting Point | 66 - 68 °C |
|---|
| Regulatory & Food Contact | FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS |
|---|
| Reported hazard statements | H302 (80%), H315 (100%), H318 (80%), H319 (20%), H330 (80%), H335 (10%) |
|---|
H302 (80%): Harmful if swallowed [Warning Acute toxicity, oral]
H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
Monoethyl maleate; 3990-03-2; (Z)-4-ethoxy-4-oxobut-2-enoic acid; AK5N1DQX7U; maleic acid, ethyl ester; NSC-11206; NSC-525207; DTXSID60892145; RefChem:138984; DTXCID80991907; 223-635-7; Ethyl maleate; Maleic Acid Monoethyl Ester; Ethyl hydrogen maleate; Maleic acid, monoethyl ester; 2-Butenedioic acid (Z)-, monoethyl ester
CAS 3990-03-2; molecular formula C6H8O4; molecular weight — g/mol.
Monoethyl maleate, 3990-03-2, (Z)-4-ethoxy-4-oxobut-2-enoic acid, AK5N1DQX7U, maleic acid, ethyl ester, NSC-11206.
Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.
Hazard statements reported: H302, H315, H318, H319, H330.
Melting Point: 66 - 68 °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.