Xanthine
Molecular Structure:
MDL:
MFCD00078453
Molecular Formula:
C5H4N4O2
Molecular Weight:
152.11
Alias:
2,6-二羟基嘌呤,2,6-(1H,3H)-嘌呤二酮, 3,7-二氢-1H-嘌呤-2,6-二酮
2,6-Dihydroxypurine
Product order:
Name |
Specifications |
Packing |
Price |
Delivery |
Xanthine |
≥99% |
1g |
RMB 132 |
现货 |
Xanthine |
≥99% |
5g |
RMB 528 |
现货 |
Xanthine |
98% |
100g |
RMB 1650 |
Consulting service |
Xanthine |
98% |
25g |
RMB 495 |
Consulting service |
Xanthine |
98% |
5g |
RMB 220 |
Consulting service |
Character:
溶解度:1g/14.5l水 (16°C),1g/1.4l沸水 (16°C),易溶于无机酸和氢氧化钾溶液,微溶于乙醇,不溶于有机溶剂,加热分解无熔点,并部分升华。
熔点: 300 °C
pH6时最大吸收波长267nm,ε10250,最小吸收波长240nm,吸收度比值A250/A260=0.57、A280/A260=0.61、A290/A260=0.07。pH10时最大吸收波长277.5nm和240.5nm,摩尔吸光系数分别为9300和8900,最小吸收波长257nm,吸光度比值A250/A260=1.29、A280/A260=1.71、A290/A260=0.92。半数致死量(小鼠,腹腔)500mg/kg。
Quality Standard:
外观Appearance 白色至微黄色粉末
红外光谱鉴别Infrared spectrometry 符合
纯度Purity ≥98.0% (HPLC)
E 1 %/1 cm, 278nm pH 10 599 - 612
干燥损失Loss on drying <1 % (105°C, 5 hrs)
重金属Heavy metals (as Pb) ≤0.001 %
硫酸盐灰分Sulfated ash <0.2 % (800°C)
Storage:
密封避光2-8°C保存
用途 生化研究,有机合成。