104-98-3
3-imidazol-4-ylacrylic acid
CAS: 104-98-3
Molecular Formula: C6H6N2O2
104-98-3 - Names and Identifiers
104-98-3 - Physico-chemical Properties
| Molecular Formula | C6H6N2O2 |
| Molar Mass | 138.12 |
| Density | 1.3471 (rough estimate) |
| Melting Point | 226-228°C(lit.) |
| Boling Point | 253.51°C (rough estimate) |
| Flash Point | 230.1°C |
| Water Solubility | SLIGHTLY SOLUBLE |
| Solubility | 1.5g/l |
| Vapor Presure | 3.87E-09mmHg at 25°C |
| Appearance | White to white-like powder |
| Color | White to beige |
| BRN | 81405 |
| pKa | 2.94±0.10(Predicted) |
| Storage Condition | Keep in dark place,Sealed in dry,2-8°C |
| Refractive Index | 1.5100 (estimate) |
| MDL | MFCD00005203 |
| In vitro study | Urocanic acid (UCA) is formed in the upper layers of the epidermis where filaggrin, a histidine-rich filamentous protein produced after caspase-14 cleavage of profilaggrin, is broken down by proteinases into component amino acids. |
104-98-3 - Risk and Safety
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| RTECS | NI3425200 |
| HS Code | 29332990 |
| Hazard Class | IRRITANT |
104-98-3 - Reference
| Reference Show more | 1. [IF=5.82] Jiaqi Wu et al."Role of microbial metabolites of histidine in the development of colitis."MOLECULAR NUTRITION & FOOD RESEARCH |
104-98-3 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| biological activity | Urocanic acid is the main light receptor in the skin and naturally exists as trans-urinic acid. |
Last Update：2024-04-09 15:16:46
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