1) sterane
甾烷
1.
Distribution and sources of steranes and pentacyclic triterpanes in surface soils and bottom sediments from Tianjin;
天津地区表层土壤和河流沉积物中甾烷与五环三萜烷的分布特征及污染源分析
2.
Direct evidence of sterane and 4-methyl-sterane originating from plant pollens in organic deposit;
沉积有机质中甾烷、4-甲基甾烷植物花粉来源的直接证据
3.
The biodegradation of regular sterane and rearranged sterane in crude oil was studied on the basis of simulated biodegradation experiment to the crude oil.
通过喜氧细菌对原油的模拟生物降解实验,以及对模拟产物的饱和烃色谱—质谱分析,对原油饱和烃中规则甾烷和重排甾烷的降解作用进行了研究。
2) steranes
甾烷
1.
Study on steranes as a indicator of oil spills;
甾烷作为溢油指示物(或指标)的研究
2.
Study on Steranes as Indicators of Spilled Oi1s by Fuzzy Clustering Analysis;
甾烷作为溢油指示物的模糊聚类分析研究
3.
The results of pyrolysis experiments, performed in confined system (gold capsule) demonstrate that maturation behaviors of hopanes (hopenes) and steranes released from kerogen change substantially with the variation of water amount and mineral nature.
C3122S/(22R+22S)升藿烷和C2920S/(20R+20S)和C29αββ/(ααα+αββ)甾烷比值都先从240℃至280℃降低,然后从280℃至320℃升高。
3) terpanes and steranes
甾烷和藿烷
1.
The preliminary results show that samples of both categories contained plasticizers,n-alkanes,polycyclic aromatic hydrocarbons(PAHs),oxy-PAHs,and minor amounts of terpanes and steranes.
比较了2006年春季沙尘天气和非沙尘天气吸附到TSP样品中增塑剂、正构烷烃、多环芳烃(PAHs)、甾烷和藿烷类等有机污染组分特征。
4) diasteranes
重排甾烷
1.
The GC/MS analyses for alkanes from Late Jurassic source rocks of the Liudong depression,Kailu Basin,northeastern China showed that the concentration of diasteranes in some samples decreases anomalously with depth,suggesting that in this case the formation of these compounds may be not depended on maturity.
陆东凹陷上侏罗统生油岩样品饱和烃色质分析表明，重排甾烷随井深出现含量下降的逆转现象，表明热演化不完全是这类化合物形成的主要控制因素。
5) stanol
甾烷醇
1.
Advances in studies on physiological metabolic regulating effects and mechanisms of sterol and stanol from plants;
植物甾醇及甾烷醇的生理代谢调节功能及其机制研究进展
2.
2-(9-Carbazole)acetyl chloride, a novel fluorescence derivatization reagent, has been developed for the determination of sterols and stanol.
采用荧光衍生化试剂2-(9-咔唑)乙酰氯,对天然产物谷甾醇、豆甾醇、菜油甾醇及谷甾烷醇的柱前衍生化条件,包括催化剂的种类、反应温度、衍生化时间等进行了考察,结果表明:催化剂选用三乙胺,反应温度80℃,时间20min,衍生产物具有恒定的最大检测响应值。
6) sitostanol
谷甾烷醇
1.
Determination of sitostanol in phytosterol samples by GC—MS;
GC—MS法测定植物甾醇样品中的谷甾烷醇
2.
85%,w(sitostanol)=93.
以豆甾醇为原料、Pd/C为催化剂,通过常压催化氢化制备谷甾烷醇。
补充资料：(22E,24R)-麦角甾烷-5,7,22-三烯-3β醇
分子式：C28H44O
分子量：396.66
CAS号：57-87-4
性质：片状结晶（乙醇）或针状结晶（乙醚）。含1.5mol结晶水者，熔点168℃。沸点250℃/1.4Pa。[α]20/D-135°（C1.2，氯仿）。
制备方法：由从葡萄糖合成该品的酵母中提取。
用途：是生产维生素D2的前体，也是生产激素类药物的中间体，可用来生产可的松。
分子量：396.66
CAS号：57-87-4
性质：片状结晶（乙醇）或针状结晶（乙醚）。含1.5mol结晶水者，熔点168℃。沸点250℃/1.4Pa。[α]20/D-135°（C1.2，氯仿）。
制备方法：由从葡萄糖合成该品的酵母中提取。
用途：是生产维生素D2的前体，也是生产激素类药物的中间体，可用来生产可的松。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条