5α-cholestanediyl-(3β.6α)-dibenzoate | 34675-03-1

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 类固醇和类固醇衍生物
• 英文名称: 5α-cholestanediyl-(3β.6α)-dibenzoate
• 英文别名: 5α-Cholestandiyl-(3β.6α)-dibenzoat
• CAS: 34675-03-1
• 化学式: C₄₁H₅₆O₄
• 分子量: 612.893
• InChiKey: IMLUIPGCMWNYNX-KCCIWMNCSA-N

物化性质

• 沸点：
  659.5±38.0 °C(Predicted)
• 密度：
  1.10±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  10.17
• 重原子数：
  45.0
• 可旋转键数：
  9.0
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.66
• 拓扑面积：
  52.6
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为产物：
  描述：

  戊醇 、 alkaline earth salt of/the/ methylsulfuric acid 在 sodium 作用下， 生成 5α-cholestanediyl-(3β.6α)-dibenzoate
  参考文献：
  名称：

  118.甾醇系列中的酰基迁移

  摘要：

  DOI：

  10.1039/jr9430000437

文献信息

• Hourly Personal Exposures to Fine Particles and Gaseous Pollutants—Results from Baltimore, Maryland
  作者：Li-Te Chang、Petros Koutrakis、Paul J. Catalano、Helen H. Suh

  DOI：10.1080/10473289.2000.10464151

  日期：2000.7

  A study to characterize 1-hr multi-pollutant exposures was performed in Baltimore, MD, during the summer of 1998 and the winter of 1999, and was conducted over a 15-day period in each of the two seasons. Personal exposures were measured by a trained field technician, who wore a newly developed Roll-Around System (RAS) to measure 1-hr PM2.5 and gaseous (CO, O-3, NO2, SO2, volatile organic compounds [VOCs]) exposures. One-hour O-3, NO2, and SO2 personal exposures were measured using samplers developed in our laboratory, while short-term PM2.5 CO, and VOCs exposures were measured using currently available monitors. All 1-hr multi-pollutant exposures were measured while the technician performed pre-determined activities, beginning at 7:00 a.m, and ending at 7:00 p.m. of the same day. Activities were scripted to simulate activities performed by older adults (65+ years of age). Corresponding 1-hr ambient pollutant concentrations were obtained from federal or state monitoring networks.In this paper, we discuss the results from our study and present our descriptive analysis of the 1-hr personal particulate and gaseous exposure data. Personal PM2.5, O-3, CO, and VOCs exposures showed substantial variability over the 12-hr sampling periods. Multiple pairwise comparison tests showed that 1-hr personal O-3 exposures were significantly lower in indoor microenvironments as compared with outdoor microenvironments. One-hour personal CO exposures measured in vehicles were significantly higher than those measured in other microenvironments. The associations between 1-hr personal exposures and corresponding ambient concentrations differed by pollutant and by microenvironment. For example, the correlation between personal PM2.5 exposures and ambient concentrations was lowest (r = 0.36, p < 0.05) in the winter for indoor non-residential microenvironments, and was highest (r = 0.90, p < 0.05) in the winter for in-vehicle microenvironments. For O-3, the correlation between personal exposures and ambient levels was weakest in the winter for residential microenvironments (r = 0.05, p > 0.05), and was strongest in the summer for outdoor near-roadway microenvironments (r(s) = 0.91, p < 0.05).