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| CAS号 : | 98948-82-4 |
精确质量 : | 235.01200 |
| 分子式 : | C10H5NO6 |
logP : | 0.30630 |
| 分子量 : | 235.15000 |
PSA : | 124.79000 |
5,8-二氢-4,6-二羟基-5,8-二氧代-2-喹啉羧酸 | |
8-hydroxy-4,5,6-trioxo-1H-quinoline-2-carboxylic acid | |
98948-82-4 | |
C10H5NO6 | |
235.15000 | |
124.79000 | |
0.30630 | |
235.01200 |
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2933499090
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品名, 成分含量, 用途, 乌洛托品请注明外观, 6－己内酰胺请注明外观, 签约日期 |
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2933499090. 其他含喹琳或异喹啉环系的化合物〔但未进一步稠合的〕. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0% |
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2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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2933499090. Other Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused |
用2,4,5-三甲氧基苯胺与丁酮二酸二乙酯加热缩合,生成2,4,5-三甲氧基苯胺缩丁酮二酸二乙酯。后者在高温加热下环合得4-羟基-5,6,8-三甲氧基喹啉-2-羧酸乙酯,然后经酸水解得4,5,6,8-四羟基喹啉-2-羧酸氢溴酸盐,进而以铁氰化钾在碱性条件下氧化得到该品。 | |
白内停的中间体。 |
