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Objective To establish a preparative method for rupestonic acid reference substance from Artemisia rupestris by HPLC. 目的研究高效液相色谱制备一枝蒿酮酸对照品的方法。
Object To establish an isolation method of theanine reference substance by preparative HPLC. 目的研究制备型高效液相色谱分离纯化茶氨酸对照品的方法。
The product of suavissimoside R1 can be used as reference substance for analysis. 悬钩子皂苷R1产品可用做分析方法的对照品。
Conclusion: It provides the basis for purification and standardized of curcumol reference substance . 结论：为莪术醇对照品的标化和提纯提供了依据。
Preparation, homogeneity, stability and certification of reference substance of bornyl acetate were studied. 摘要研究了乙酸龙脑酯标准样品的制备、均匀性和稳定性及其定值方法。
British Pharmacopoeia method is more accurate because of its using the reference substance as a calibration. 英国药典方法更为可靠，关键是采用了标准品进行校正计算。
Preparation,homogeneity,stability and certification of reference substance of bornyl acetate were studied. 研究了乙酸龙脑酯标准样品的制备、均匀性和稳定性及其定值方法。
Conclusions The preparation techniques are simple and high yield, can be used for preparing the reference substance of platycodin-D. 结论该工艺简单，收率高，可用于桔梗皂苷D标准品的制备。
RESULTS:The test sample was similar to reference substance in that the TLC spots at the corresponding place were of the same color. 结果:制剂中被测成分色谱分别在与对照品色谱对应的位置上显相同颜色的斑点。
RESULTS: The indirubin extracted by this method was of high purity (97.78%).The sample purity was similar to reference substance one((98.01%)). 结果:此工艺所得靛玉红纯度为97.;78%25;且样品与对照品纯度相接近;NMR和IR图谱相同。
An HPLC method was established for the determination of indirubin to study the solubilities of the solid system with indirubin as a reference substance. 结果共研磨技术和共沉淀法有效提高了靛玉红的表观溶解度,不同载体研究表明共研物中亲水载体的羟基对改善难溶性药物的溶解度有着重要的影响。
Methods: Isovitexin was used as reference substance to evaluate the chromatogram of 10 samples from different regions and 12 samples collected in different months. 方法:以异牡荆苷为对照品,测定不同产地的10个样品以及不同采收期的12个样品的色谱图谱。
Schmidt ver.Mandshuricum(Maxim.) Kitag contained aristolochic acid A or not by HPLC and MS,and the difference in the reference substance and the sample solution was compared. 方法:采用HPLC与MS分别检测北细辛中的马兜铃酸A,并比较对照品和供试品的检测限。
The drug control institution affiliated to the drug regulatory agency of the State Council is responsible for standardizing the National Drug Standard Substance and Reference Substance. 国务院药品监督管理部门的药品检验机构负责标定国家药品标准品、对照品。
RESULTS The synthetical sanagole was in comformity with Japanese reference substance in physical chemistry and spectrum characteristics,and had significant radiosensitive effect on tumor cells. 结果:合成得到的沙纳唑与日本对照品在理化性质及光谱特征上完全一致,对肿瘤细胞的增敏作用显著。
Don't refer to this matter again, please. 请不要再提这件事了。
A major research and development Suanzaoren saponin, white-ethoxylated flexor dishes red base, Maidong saponin, Bupleurum saponin, Yang Huang Su and other Chinese medicine reference substance bud. 主要研发有酸枣仁皂甙、乙氧基白屈菜红碱、麦冬皂甙、柴胡皂苷、杨芽黄素等中药对照品。
The work provided the material condition with the improvement and use of the colloidal titration in the determination of cationic polyelectrolytes.PVSK is a valuable reference substance. 为阳离子聚电解质测试中应用胶体滴定法提供了物质条件。
The emery is a hard metallic substance. 金刚砂是非常坚硬的金属物质。
Objective To prepare reference substance for quality control of Arnebia euchroma.Caffeic acid tetramers was extracted and separated from acetone water extraction of Arnebia echroma. 目的从新疆软紫草的丙酮水提取物中分离制备了咖啡酸四聚体对照品。