Carbon-13 atom
CARBON-13C
CAS: 14762-74-4
Molecular Formula: C
Carbon-13 atom - Names and Identifiers
| Name | CARBON-13C |
| Synonyms | Carbon13 CARBON-13C Methane-13C Carbon-13 atom methane-13c CH4 Carbon, isotope of mass 13 Carbon-13C (Elemental, Amorphous) |
| CAS | 14762-74-4 |
Carbon-13 atom - Physico-chemical Properties
| Molecular Formula | C |
| Molar Mass | 13.02 |
| Melting Point | 3550°C(lit.) |
| Appearance | amorphous |
Carbon-13 atom - Risk and Safety
| Risk Codes | 36/37 - Irritating to eyes and respiratory system. |
| Safety Description | S7 - Keep container tightly closed. S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 1361 4.2/PG 3 |
| WGK Germany | 3 |
| Hazard Class | 4.2 |
| Packing Group | III |
Carbon-13 atom - References
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | methane-13c-labeled methane-citrine breath test is a newly developed safe, simple, specific, quantitative liver function test method. The method can detect the function of liver cells at the level of organelles and enzyme molecular level, including the structure, quantity, cell state, function and compensation of liver cells, so as to effectively evaluate the liver cell injury and liver function reserve of chronic liver disease. |
| Use | methane-13C, also known as carbon-13C, is a stable isotope. Due to the characteristics of high safety, simplicity, non-invasive, strong sensitivity and specificity, it has gradually replaced the radioactive reagents and played an increasingly important role in the diagnosis of clinical diseases. It is favored by the medical industry at home and abroad. |
| synthesis method | in a 100mL two-necked flask, 1g of methyl iodide-13C, 1.41g of acetaminophen, 2.58g of potassium carbonate, 25ml of acetonitrile. After the addition was completed, the nitrogen gas was kept on, and the reaction was stirred at 25 °c for 40 hours. After the reaction is finished, the precipitate is filtered off, washed with ethyl acetate, the washing liquid and filtrate are mixed, sodium hydroxide is added and stirred for 0.5h, the liquid is separated, the collected organic layer is desolved, dried, and cyclohexane is recrystallized, activated carbon in addition to color, that is, the product. Yield 91%. The purity was 99%. The isotopic purity was 99%. |
| preparation method | in order to further understand the lignin of monocotyledonous plants, Yang Haitao et al. Stem Internode cavity were injected in the side chain alpha, beta, gamma with methane-13C labeled pine alcohol glucoside, obtained side chain with methane-13C labeled rice straw lignin. By CP/MAS 13C NMR analysis, it was found that the exogenous pine alcohol glucoside did not affect the normal biosynthesis of lignin and carbohydrate in rice. Liquid 13C NMR test results show that the original rice straw lignin is the main structure of beta O 4, beta 1, beta and Beta 5 structure, there are a small amount of pine alcohol and Alpha O 4 structure. In addition, it has been demonstrated that lignin is covalently bonded to components such as saccharides at the alpha position. |
| production method | in a 100mL two-necked flask, 1g of methyl iodide-13C, 1.41g of acetaminophen, 2.58g of potassium carbonate, 25ml of acetonitrile. After the addition was completed, the nitrogen gas was kept on, and the reaction was stirred at 25 °c for 40 hours. After the reaction is finished, the chemical book is filtered to precipitate, the precipitate is washed with ethyl acetate, the washing liquid and the filtrate are mixed, sodium hydroxide is added and stirred for 0.5h, the liquid is separated, the collected organic layer is desolved, dried, and recrystallized with cyclohexane, activated carbon in addition to color, that is, the product. Yield 91%. The purity was 99%. The isotopic purity was 99%. In order to further understand the lignin of monocotyledonous plants, Yang Haitao et al. Stem Internode cavity were injected in the side chain alpha, beta, gamma with methane-13C labeled pine alcohol glucoside, obtained side chain with methane-13C labeled rice straw lignin. By CP/MAS 13C NMR analysis, the chemical book found that the exogenous pine alcohol glucoside did not affect the normal biosynthesis of lignin and carbohydrate in rice. Liquid 13CNMR detection results show that the main structure of rice straw lignin is beta O4, beta 1, beta and Beta 5 structure, there are a small amount of pine alcohol and Alpha O4 structure. In addition, it has been demonstrated that lignin is covalently bonded to components such as saccharides at the alpha position. |
Last Update：2024-04-09 20:45:29
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CAS: 14762-74-4
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CAS: 14762-74-4
Tel: 18301782025
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Mobile: 18021002903
QQ: 3008007409
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