私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

有機(jī)合成方法數(shù)據(jù)庫(kù)ChemKey Search Database

The ChemKey Search computer database has been compiled over a 35 year period by Professor Albert Padwa and now contains 90,000 references chosen from all the major organic journals. Particular attention has been devoted to heterocyclic chemistry, synthetic methodology, asymmetric synthesis, natural product synthesis, reactive intermediates, organometallic chemistry, stereochemistry, etc. Available for both the Mac and IBM using Filemaker Pro technology with no additional software required.

Yearly updates containing 5,000 new references are added each year.

水溶液反應(yīng)庫(kù)及平衡計(jì)算Joint Expert Speciation Syetem (JESS)(免費(fèi))
JESS is a powerful research tool for modelling chemical speciation in complex aqueous environments.

WebReactions (化學(xué)反應(yīng)庫(kù))(免費(fèi))
WebReactions is a unique reaction search system offering direct retrieval of reaction precedents through the internet.
Features of the Reaction Search
The unique search system of WebReactions is based on reaction types and bonding change in any reaction, rather than on a search for structures of substrates and products..

Synthline: 藥物合成數(shù)據(jù)庫(kù)光盤

Synthline® on the Web presents in structure-searchable format the schemes of synthesis for drugs currently on the market or in development worldwide. Each scheme is linked to its original reference citation(s) and to basic information for the end product synthesized. Textual descriptions of the routes of synthesis are linked to many of the schemes.

SPRESIweb (化學(xué)反應(yīng)、合成方法庫(kù)網(wǎng)絡(luò)版)
SPRESIweb is a chemical structure and reaction database that provides direct access to over 5,0 million structures, 3,7 million reactions and 28 million factual data (physical constants, reaction conditions) and keywords, extracted from 600.000 references and patents.