發送短信

數:

提供者:

CAPTCHA:

  ______    _____     _  __   __   __    ____    
 /_   _//  |  ___||  | |/ //  \ \\/ //  |  _ \\  
 `-| |,-   | ||__    | ' //    \ ` //   | |_| || 
   | ||    | ||__    | . \\     | ||    | .  //  
   |_||    |_____||  |_|\_\\    |_||    |_|\_\\  
   `-`'    `-----`   `-` --`    `-`'    `-` --`

Please enter what you see:

發送短信 : Ultrasound-Assisted Synthesis of N -Acylcyanamides and N -Acyl-Substituted Imidazolones from Carboxylic Acids by Using Trichloroisocyanuric Acid/Triphenylphosphine