(Z)-2-(Dibutylamino)-1-(2,7-dichloro-9-(4-chlorobenzylidene)-9H-fluoren-4-yl)ethanol ● Identification editor: (1) take this product mg number, amount of the tube, with citric acid and acetic anhydride was 1ml, on the water bath heating, namely red purple. (2) take the product accurately, and add...Send Inquiry
(1) take this product mg number, amount of the tube, with citric acid and acetic anhydride was 1ml, on the water bath heating, namely red purple.
(2) take the product accurately, and add the appropriate amount of ethanol to the water bath to dissolve it in a slightly hot way, and make a solution containing 10 g per 1ml. According to the spectrophotometry (two appendix 24 page of Chinese Pharmacopoeia 1990 edition), the maximum absorption at the wavelength of 234nm, 266nm, 301nm and 335nm is measured.
(3) the infrared absorption spectrum of this product should be in accordance with the atlas of the control products.
The related substances were prepared from this product and chloroform, and the solution containing 10mg in each 1ml was taken as the test solution. The most accurate solution was diluted with chloroform to make the solution containing 50 g per 1ml as the control solution. Thin-layer chromatography (Chinese Pharmacopoeia 1990 edition appendix two page 30) test, draw the two solution 10 L, respectively in the same thin layer plate of silica gel GF254, using hexane acetone two triethylamine (80: 14: 6) as the agent, after the start of the dry, UV the lamp (254nm) view, the testsolution such as spots of impurities is less than 4, compared with the main spot control solution of its color, not more. Dry weight loss of this product, drying at 105 C to constant weight, the loss of weight must not exceed 0.2% (Chinese Pharmacopoeia, 1990 edition of the two appendix 55 pages). The burning residue is 1g, and it is checked according to law (two appendix 56 pages of China Pharmacopoeia 1990 edition). The residual residue should not exceed 0.1%. The residue left behind by heavy metals is inspected according to law (Chinese Pharmacopoeia 1990 two, appendix 51, page second). Heavy metals can not exceed twenty parts per million.
●Content determination editor:
Take this product about 0.5g, precision said, adding acetic anhydride 20ml shaking, dissolving, adding crystal violet indicator solution 1 drops with perchloric acid (0.1mol/L) titration solution to pure blue, and the blank test calibration titration results, i.e.. The perchloric acid (0.1mol/L) per 1ml is equivalent to the C30H32C13NO of 52.89mg.
The package of all our chemical products reaching up to the industry standard, we usually use kraft drums or woven bags for our powder state products.