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- 详细信息
- 文献和实验
- 技术资料
- 库存:
有现货
- 英文名:
Tocopheryl Acetate, a
- CAS号:
7695-91-2
- 保质期:
根据瓶身LOT号查询
- 供应商:
浙江羽翔生物科技有限公司
- 保存条件:
2-8°C
- 规格:
500MG
属性
等级
certified reference material
pharmaceutical secondary standard
质量水平
300
Agency
traceable to Ph. Eur. T1600000
traceable to USP 1667701
API类
tocopherol
CofA
current certificate can be downloaded
技术
HPLC: suitable
gas chromatography (GC): suitable
密度
0.96 g/mL at 20 °C (lit.)
应用
pharmaceutical (small molecule)
格式
neat
储存温度
2-8°C
SMILES字符串
CC(C)CCC[C@@H](C)CCC[C@@H](C)CCC[C@]1(C)CCc2c(C)c(OC(C)=O)c(C)c(C)c2O1
InChI
1S/C31H52O3/c1-21(2)13-10-14-22(3)15-11-16-23(4)17-12-19-31(9)20-18-28-26(7)29(33-27(8)32)24(5)25(6)30(28)34-31/h21-23H,10-20H2,1-9H3/t22-,23-,31-/m1/s1
InChI key
ZAKOWWREFLAJOT-CEFNRUSXSA-N
一般描述
应用
分析说明
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文献和实验Long-term alpha-tocopherol supplements may improve mental development in extremely low birthweight infants.
Methods to improve the mental development of extremely low birthweight (ELBW) children are currently lacking. We assessed the effects of long-term supplementation of alpha-tocopherol on the neurological development of 259 school-aged ELBW children. Extremely low birthweight participants were divided into three groups: group A with no alpha-tocopherol supplementation (n = 121); group B with the supplementation for <6 months (n = 104) and group C with the supplementation for more than 6 months (n = 34). We analysed the participants' data at birth and between the ages of one-and-a-half to 8 years and evaluated potential factors associated with intellectual disabilities. Children from group C had the best outcome. The groups' mean gestational weeks and mean ventilator days were as follows: 27.5 weeks, 16.1 days (group A); 25.7 weeks, 41.7 days (group B); and 25.1 weeks, 75.5 days (group C). Multivariate regression analysis revealed that the odds ratios for impaired mental development at 8 years were 1.5 in group B and 0.19 (p = 0.017) in group C, compared with 1.0 in group A. The association between the duration of alpha-tocopherol administration and performance intelligence quotient (IQ) was dose dependent (p = 0.03). Long-term supplementation of alpha-tocopherol appeared to improve mental development, in particular, performance IQ, in school-aged ELBW children.
:Formerly listed as Type III 溶解性:溶于水,参考浓度2mg/ml 储存条件:2-8℃ From Sigma D1626 Salmon DNA 的配制: 组份浓度10 mg/ml Salmon DNA ;配制量约100 ml 配制方法: 1. 称取鲑鱼精DNA 2 g置于500 ml烧杯中,加入约200 ml的TE Buffer。 2. 用磁力搅拌器室温搅拌2~4小时
Carnoy's Fix: 6 parts 100 % EtOH 3 parts CHCl3 1 part glacial acetic acid Carmine Alum Stain: Place 1 g carmine (Sigma C1022) and 2.5 g aluminum potassium sulfate (Sigma A7167) in 500 ml distilled water and boil for 20 min. Adjust final
入20.9g MOPs,放在磁力搅拌器上溶解。再加1.86g EDTA二水二钠,放在磁力搅拌器上溶解。用1M灭过菌的NaOH 调PH至7.0(约用NaOH 40ml),用DEPC 处理过的去离子水定容至500ml,装入棕色瓶中,写好标签,室温避光保存。4、5 × 甲醛变性胶加样缓冲液(5×loading buffer): 配制10ml。预先配制水饱和的溴酚蓝溶液:在1.5ml 离心管中加入约0.1mg溴酚蓝,加入1ml DEPC水溶解,充分振荡溶解,离心,可见离心管底部有溴酚蓝粉末剩余,上层液体
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