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| CAS号 : | 65802-56-4 |
精确质量 : | 161.02600 |
| 分子式 : | C4H7N3O2S |
logP : | 0.53160 |
| 分子量 : | 161.18200 |
PSA : | 115.99000 |
4-氨基-6-羟基-2-巯基嘧啶一水物 | |
4-Amino-6-hydroxy-2-mercaptopyrimidine monohydrate | |
65802-56-4 | |
C4H7N3O2S | |
161.18200 | |
115.99000 | |
0.53160 | |
161.02600 |
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灰白色固体
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Stable under normal temperatures and pressures.
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290.7ºC
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Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
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>300 °C(lit.)
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557ºC at 760 mmHg
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2933599090
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3
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R22
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S26-S24/25
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UW0495000
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Xn
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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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2933599090. 其他结构上有嘧啶环的化合物(包括其他结构上有哌嗪环的化合物. 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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2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
氰乙酸乙酯与硫脲环合而得:将无水乙醇与乙醇钠加入干燥的反应罐,搅拌加热至76℃,投入硫脲,在回流滴加氰乙酸乙酯。加毕,保持回流4h,冷至30℃,过滤,得粗品。加3.5倍水溶解,投入活性炭脱色,过滤,滤液加热至90℃,搅拌滴加40%乙酸至pH4-5,冷却,过滤,得成品。 | |
医药生物化工中间体。 |
