阿昔洛韦
acycloguanosine
CAS 编号:59277-89-3
包装规格:暂无规格型号
Packing: 25kg cardboard drum
产品说明: 性质:白色结晶性粉末。无臭无味,
其钠盐溶于水。
标准:中国药典2005版按无水物计算,含C8H11N5O3
得少于98.0%;溶液的澄清度与颜色应符合规定;有关
物质应符合规定;鸟嘌呤应符合规定;干燥失重不得过6.0%;
炽灼残渣不得过0.1%?;含重金属不得过0.001%。
制法:减压蒸去过量的乙酐,冷至0℃过滤,滤饼用乙醇和水洗,
干燥,得N,N′-二乙酰鸟嘌呤。或者鸟嘌呤三甲基硅烷化后,
再和2苄氧基乙氧基甲基氯反应后,再去掉苄基得阿昔洛韦。
将乙酐、乙酸和对甲苯磺酸混合,冷至1O℃以下。鸟嘌呤和乙酐混合,
加入少量乙酸和乙酸锌,搅拌回流。滤饼用氯仿洗涤,干燥后溶于40%
甲胺水溶液,搅拌回流。加入氯仿,过滤。冷却,过滤,滤液减压浓缩
至浆状物,冷却后用乙醇洗,过滤。滤饼用水重结晶,得阿昔洛韦。
以鸟嘌呤为原料。
用途:该品是嘌呤核苷衍生物,对DNA的合成有抑制作用,其抗疱疹病
毒活性比阿糖腺苷强160倍。临床用于单纯性疱疹病毒脑炎、疱疹病毒
角膜炎及外生殖器感染、艾滋病的水痘带状疱疹病毒感染和巨细胞病毒
感染,慢性乙型肝炎等。
acycloguanosine
CAS No. :59277-89-3
Package: No Specification
Packing: 25kg cardboard drum
Specification: CP/EP6.0
Product Description: Nature: white crystalline powder.
Odorless and tasteless, the sodium salt dissolved in water.
Standard: Chinese Pharmacopoeia 2005 edition by the anhydrous
basis, may be less than 98.0% with C8H11N5O3; Clarity and color
of the solution should meet the requirements; related materials
should meet the requirements; guanine should meet the requirements;
not over 6.0% Loss on drying; Chi Residue on Ignition shall not
be over 0.1% ?; 0.001% heavy metals may not have.
For herpes simplex virus encephalitis, keratitis and genital herpes
infection, AIDS, varicella zoster virus infection and cytomegalovirus
infection, chronic hepatitis B and so on.