荧光素胺异构体 II，CAS 登记号 51649-83-3，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 荧光素胺异构体 II 的 CAS 号：51649-83-3，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。
Fluoresceinamine isomer II · CAS 51649-83-3 · C20H13NO5. UNII QC9B6K6F63.
| CAS Registry Number | 51649-83-3 |
|---|---|
| PubChem CID | 103924 |
| Molecular formula | C20H13NO5 |
| IUPAC name | 5-amino-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one |
| UNII (FDA) | QC9B6K6F63 |
| Molecular Weight | 347.3 |
|---|---|
| XLogP3 | 2.7 |
| Hydrogen Bond Donor Count | 3 |
| Hydrogen Bond Acceptor Count | 6 |
| Rotatable Bond Count | 0 |
| Exact Mass | 347.07937252 |
| Monoisotopic Mass | 347.07937252 |
| Topological Polar Surface Area | 102 |
| Heavy Atom Count | 26 |
| Formal Charge | 0 |
| Reported hazard statements | H315 (100%), H319 (100%), H335 (97.5%) |
|---|
H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
51649-83-3; Fluoresceinamine isomer II; FCA II; Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 6-amino-3',6'-dihydroxy-; DTXSID40199588; Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 6-amino-3',6'-dihydroxy-; 6-Amino-3',6'-dihydroxyspiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one; 6-Amino-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-(9H)xanthen]-3-one; 6-Amino-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one; RefChem:599374; DTXCID00122079; 6-Aminofluorescein; 6-Amino-3',6'-dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one; 2-Aminofluorescein; 5-amino-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one; 6-AF
CAS 51649-83-3; molecular formula C20H13NO5; molecular weight — g/mol.
51649-83-3, Fluoresceinamine isomer II, FCA II, Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 6-amino-3',6'-dihydroxy-, DTXSID40199588, Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 6-amino-3',6'-dihydroxy-.
Hazard statements reported: H315, H319, H335.
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.