胸腺嘧啶，CAS 登记号 65-71-4，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，下游主要用于医药中间体及原料药。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。
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Thymine · CAS 65-71-4 · C5H6N2O2. UNII QR26YLT7LT. Melting Point: 316; Melting Point: 320 °C; Solubility: 3820.
| CAS Registry Number | 65-71-4 |
|---|---|
| PubChem CID | 1135 |
| Molecular formula | C5H6N2O2 |
| IUPAC name | 5-methyl-1H-pyrimidine-2,4-dione |
| UNII (FDA) | QR26YLT7LT |
| Molecular Weight | 126.11 |
|---|---|
| XLogP3 | -0.6 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 0 |
| Exact Mass | 126.042927438 |
| Monoisotopic Mass | 126.042927438 |
| Topological Polar Surface Area | 58.2 |
| Heavy Atom Count | 9 |
| Formal Charge | 0 |
| Melting Point | 316 |
|---|---|
| Melting Point | 320 °C |
| Solubility | 3820 |
| Solubility | 3.82 mg/mL |
| Vapor Pressure | 0.00000133 [mmHg] |
| LogP | -0.62 |
| LogP | -0.57 |
| Ionization Efficiency | 1.16 |
| Ionization Efficiency | 2.7 |
| Ionization Efficiency | MeCN (80%) |
| GHS notification summary | 57.1% (4 / 7) |
|---|
| GHS notification summary | 57.1% (4 / 7) |
|---|---|
| Reported hazard statements | H319 (42.9%) |
This chemical does not meet GHS hazard criteria for 57.1% (4 of 7) of all reports.
H319 (42.9%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
thymine; 65-71-4; 5-methyluracil; 2,4-Dihydroxy-5-methylpyrimidine; Thymin; Thymine anhydrate; 5-Methyl-1,2,3,4-tetrahydropyrimidine-2,4-dione; 2,4(1H,3H)-Pyrimidinedione, 5-methyl-; Thymin (purine base); 5-methyl-1H-pyrimidine-2,4-dione; 5-methyl-2,4(1H,3H)-pyrimidinedione; DTXSID4052342; QR26YLT7LT; NSC14705; CHEBI:17821; NSC-14705
CAS 65-71-4; molecular formula C5H6N2O2; molecular weight — g/mol.
thymine, 65-71-4, 5-methyluracil, 2,4-Dihydroxy-5-methylpyrimidine, Thymin, Thymine anhydrate.
57.1% of GHS notifications report no hazard classification (4 of 7).
Melting Point: 316; Melting Point: 320 °C; Solubility: 3820; Solubility: 3.82 mg/mL.
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.