中文名 | 1,7-二甲基黄嘌呤 |
英文名 | 1,7-dimethylxanthine |
别名 | 副黄嘌呤 咖啡因杂质F 咖啡因EP杂质F 1,7-二甲基黄嘌呤 咖啡因杂质F(EP) 1,7-二甲基黄嘌呤(副黄嘌呤) 1, 7-二甲基黄嘌呤溶液, 100PPM |
英文别名 | 1,7-dimethylxanthine Caffeine Impurity F(EP) 1,7-dimethyl-3H-purine-2,6-dione 1,7-Dimethylxanthine-[2H6] (para-xanthine) Caffeine Impurity 6(Caffeine EP Impurity F) 1,7-Dimethylxanthine-[13C4,15N3] (para-xanthine) 1,7-Dimethyl-2,3,6,7-tetrahydro-1H-purine-2,6-dione 1,7-Dimethyl-1H-purine-2,6-dione, 2,6-Dihydroxy-1,7-dimethylpurine, Paraxanthine 1,7-Dimethyl-1H-purine-2,6-dione, 1,7-Dimethylxanthine, 2,6-Dihydroxy-1,7-dimethylpurine, Paraxanthine |
CAS | 611-59-6 |
EINECS | 210-271-9 |
化学式 | C7H8N4O2 |
分子量 | 180.16 |
InChI | InChI=1/C7H8N4O2/c1-10-3-8-5-4(10)6(12)11(2)7(13)9-5/h3H,1-2H3,(H,9,13) |
密度 | 1.3640 (rough estimate) |
熔点 | 294-296 °C (lit.) |
沸点 | 312.97°C (rough estimate) |
闪点 | 9℃ |
溶解度 | 乙醇: 0.6mg/ml |
折射率 | 1.6700 (estimate) |
酸度系数 | pKa 8.5 (Uncertain) |
存储条件 | room temp |
稳定性 | 在RT下密封存放 |
外观 | 固体 |
颜色 | white |
BRN | 197907 |
体外研究 | When Paraxanthine (PX) is applied to the cultures for a prolonged period, the number of TH +neurons is augmented in a dose-dependent manner. The effect of Paraxanthine, already significant at 100 μM, increases gradually and remains optimal between 800 and 1000 μM, at 10 DIV. Counts of TH +neurons performs at different stages of maturation of the cultures indicate that Paraxanthine most likely prevents DA cell loss. GDNF, a prototypical trophic factor for DA neurons, is only slightly more effective than 800 μM Paraxanthine in rescuing DA neurons after 10 and 16 DIV when used at an optimal concentration of 20 ng/mL. About 80% of caffeine is N3-demethylated to form Paraxanthine, Unlike Paraxanthine, caffeine is poorly effective in protecting DA neurons from death For example, at a concentration of 800 μM, caffeine produces only a modest 40% increase in the number of TH + cells at 10 DIV, whereas the same concentration of Paraxanthine optimally promotes DA cell survival (169% increase). |
危险品标志 | Xn - 有害物品 T - 有毒物品 F - 易燃物品 |
风险术语 | R22 - 吞食有害。 R39/23/24/25 - R23/24/25 - 吸入、皮肤接触及吞食有毒。 R11 - 高度易燃。 |
安全术语 | S22 - 切勿吸入粉尘。 S24/25 - 避免与皮肤和眼睛接触。 S45 - 若发生事故或感不适,立即就医(可能的话,出示其标签)。 S36/37 - 穿戴适当的防护服和手套。 S16 - 远离火源。 S7 - 保持容器密封。 |
危险品运输编号 | UN1230 - class 3 - PG 2 - Methanol, solution |
WGK Germany | 3 |
RTECS | RV9380000 |
下游产品 | 茶碱 |
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