Asymmetric Syntheses of (S)-2-Methyl-3,4,5,6-tetrahydro-2H-pyran-4-one and (2S,6S)-2,6-trans-Dimethyl-3,4,5,6-tetrahydro-2H-pyran-4-one Which Employ a Common Lactol Intermediate

R&D Labs maybe for 133813-44-2

• Taimai Sanluck Pharmaceutical Co.,Ltd

  Contact:86-592-7662921

  Address:8D,No.186,Huarong Road,Huli,Xiamen,China

• Huangshan Violet Biological Technology Co., Ltd

  Contact:+86-559-2335676

  Address:16-201 JinShanYuan,JiangNan New City,TunXi District,HuangShan City,AnHui Province,China

• Weifang Jahwa Chemical Co.,Ltd

  Contact:0086-536-8897731,8897730

  Address:No.5166 East Dongfeng Street,Weifang,Shandong,China

• Cerametek Materials（ShenZhen）Co., Ltd.

  Contact:+86-755-2324.2554

  Address:A3-#9, YongChuan Street, Suite 501

• Wuhan Kemi-Works Chemical Co., Ltd

  website:http://www.kemiworks.com

  Contact:86-27-85736489

  Address:Rm. 1503, No. 164, Jianghan North Rd., Wuhan, 430022 China