0710-3529916
0710-3211378
品 名: 2-噻吩乙酸 CAS:1918-77-0
|
檢驗(yàn)項(xiàng)目 Parameter |
標(biāo)準(zhǔn)規(guī)定 Specification |
|
|
外 觀 Appearance |
淡黃色至類白色結(jié)晶 Light yellow to white crystalline |
|
|
鑒 別 Identification（HPLC） |
相關(guān)物質(zhì)測(cè)定下，供試品溶液主峰的保留時(shí)間應(yīng)與對(duì)照品溶液主峰的保留時(shí)間一致。 The retention time of the main peak of the test solution should be consistent with the retention time of the main peak of the reference solution. |
|
|
水分 Water |
應(yīng)不得過(guò) 0.5% Not more than |
|
|
純度 Purity |
不得低于 Not less than 99.0% |
|
|
相關(guān)物質(zhì) Related substance |
3-噻吩乙酸 3-Thienylacetic acid |
不得超過(guò) Not more than 0.5% |
|
|
5-甲基噻吩-2-噻吩乙酸 5-Thienylmethyl-2-thienylacetic acid |
不得超過(guò) Not more than 0.5% |
|
|
單一最大未知雜質(zhì) Single maximum unknown impurity |
不得超過(guò) Not more than 0.2% |
|
|
總雜質(zhì) Total impurity |
不得超過(guò) Not more than 1.0% |
|
含 量 Assay by Titration
|
（ 折干計(jì)）：不得低于 Not less than 98.0% |
|
