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| Urocanic acid Basic information |
| Urocanic acid Chemical Properties |
| Melting point | 226-228 °C(lit.) | | Boiling point | 253.51°C (rough estimate) | | density | 1.3471 (rough estimate) | | refractive index | 1.5100 (estimate) | | storage temp. | Keep in dark place,Sealed in dry,2-8°C | | solubility | 1.5g/l | | form | Powder | | pka | 2.94±0.10(Predicted) | | color | White to beige | | Water Solubility | SLIGHTLY SOLUBLE | | BRN | 81405 | | CAS DataBase Reference | 104-98-3(CAS DataBase Reference) | | EPA Substance Registry System | 2-Propenoic acid, 3-(1H-imidazol-4-yl)- (104-98-3) |
| Safety Statements | 22-24/25 | | WGK Germany | 3 | | RTECS | NI3425200 | | HazardClass | IRRITANT | | HS Code | 29332990 |
| Urocanic acid Usage And Synthesis |
| Chemical Properties | white to beige fine powder | | Uses | Urocanic Acid is a biomarker in the fecal metabolic profiling of breast cancer patients. | | Definition | ChEBI: An alpha,beta-unsaturated monocarboxylic acid that is prop-2-enoic acid substituted by a 1H-imidazol-4-yl group at position 3. It is a metabolite of hidtidine. | | General Description | 4-Imidazoleacrylic acid also known as urocanic acid is a natural metabolite derived from histidine. It is majorly used as a UV chromophore with a strong absorption spectrum in the UV-B region in the range of 300-280 nm. | | Purification Methods | Crystallise the acid from water and dry it at 100o. The trans-isomer [3465-72-3] has m 225o (229-230o, 230-231o or 231o(dec, from H2O) and pK1 3.5 and pK2 5.6, and the picrate has m 225o(dec, from H2O). The cis-isomer [7699-35-6] has m 175-176o (178-179o or 180-184o dec, from H2O) and pK1 3.0 and pK2 6.7, and the picrate has m 204o (from H2O). [Beilstein 25 H 124, 25 I 536, 25 II 121, 25 III/IV 786.] |
| Urocanic acid Preparation Products And Raw materials |
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