1) norsterane
降甾烷
2) 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。
3) 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。
4) norcholesterol
降胆甾醇
5) steroid degradation
甾体降解
1.
3-ketosteroid-9α-hydroxylase (KSH),a key enzyme in the microbial steroid degradation,is highly valuable for the production of some steroid drugs.
3-甾酮-9α-羟基化酶(KSH)是微生物甾体降解途径中的关键酶,在甾体药物制备中有重要价值。
6) 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。
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