谷歌专利 Google Patents涵盖17个专利局,超过8700万项专利,包括美国专利(USPTO)、欧洲专利局(EPO)、中国知识产权局(SIPO)、日本专利局(JPO)、韩国知识产权局(KIPO)、世界知识产权组织(WIPO)
OrgSyn Since 1921, Organic Syntheses has provided the chemistry community with detailed, reliable, and carefully checked procedures for the synthesis of organic compounds.