性欧美视频69_在线播放观看av_Av在线无码网址_在线五月丁香婷啪AV

棣栭爜 > 鐢㈠搧鍒楄〃 > 鐢㈠搧瑭崇窗淇℃伅

1,2-Dimethyl-1,4,5,6-tetrahydropyrimidine

  • 鍒嗗瓙寮忥細 C6 H12 N2
  • 鐢㈠搧绶ㄨ櫉锛� OR13592
  • 鍒嗗瓙閲忥細 112
  • CAS锛� 4271-96-9
  • MDL锛� MFCD00036056
  • --

鐩寗浣嶇疆