<mark id="hupad"></mark>
<progress id="hupad"><small id="hupad"><option id="hupad"></option></small></progress>
<ins id="hupad"><video id="hupad"></video></ins><ins id="hupad"><option id="hupad"><optgroup id="hupad"></optgroup></option></ins>

<menuitem id="hupad"></menuitem>

    <tr id="hupad"></tr>

    CAS#: 479-18-5

    Name: two hydroxypropyl theophylline

    Color properties: white crystalline powder

    Chemical name: 1,3- two methyl 7- (2,3- dihydroxypropyl) -3,7- two hydrogen -1H- purine 2,6- two ketone.

    Melting point: the melting point of 158 DEG C (159-163.5 C).

    This product is two 1,3- methyl 7- (2,3- dihydroxypropyl) -3,7- two hydrogen -1H- purine 2,6- two ketone.

    According to the dry matter calculation, C10H14N4O4 containing not less than 98%.

    This product with aminophylline belong to xanthine oxidase bronchiectasis medicine, suitable for the treatment of bronchial asthma, asthmatic bronchitis and emphysema, and also can be used for preventing the attack of bronchial asthma, but also can be used for the treatment of angina pectoris and cardiac edema. Theophylline is xanthine drug representative varieties, in order to improve the solubility of theophylline and aminophylline (salt development of theophylline and ethylenediamine (salt), theophylline theophylline and choline (two), hydroxypropyl theophylline theophylline N-7 bit derivatives) etc.. Two hydroxypropyl theophylline solubility in water than aminophylline is big, but the role of a theophylline weak, its toxicity is about aminophylline 1/5. After oral LD50 3400 mg / public

    Tel:0370—3258668 Contact persons:Mr Wang & zhaozhilin Manage
    Business address: East Shangqiu Zhuzhou east road environmental protection good  park 6th building 3 unit 5 buildings zip code: 476000
    欧美肥老太交性视频,40岁熟妇XXⅩ在线观看,国产在线精品亚洲二区,美女MM131爽爽爽作爱视频 成年女人粗暴毛片免费观看,40岁熟妇XXⅩ在线观看,国产在线精品亚洲二区,美女MM131爽爽爽作爱视频 青青青在线网站 久久综合给合久久97色