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