86-74-8 咔唑 Carbazole,全國獨家合成咔唑,含量99%以上,現(xiàn)貨供應(yīng)! 86-28-2 N-乙基咔唑 N-Ethylcarbazole 1484-13-5 N-乙烯基咔唑 N-Vinyl carbazole 1592-95-6 3-Bromo-9H-carbazole 3-溴咔唑