品名 | 規(guī)格 | 包裝 | 單價 | 貨期 |
甲氨蝶呤,二水合 | USP | 1g | 858元 | 現(xiàn)貨 |
甲氨蝶呤,二水合 | 99% | 5g | 2002元 | 促銷 |
甲氨蝶呤,二水合 | 99% | 1g | 686.4元 | 促銷 |
甲氨蝶呤,二水合 | 99% | 500mg | 404.8元 | 促銷 |
甲氨蝶呤,二水合 | 99% | 250mg | 228.8元 | 促銷 |
外觀Appearance 黃色至橙色粉末
核磁Proton NMR spectrum Conforms
純度Purity ≥99.0% (HPLC,面積歸一法)
比旋光度Specific rotation [a]20/D +19.0 ~ +24.0 °(C=0.1,1N NaOH)
硫酸鹽灰分sulfated ash ≤0.1%
水分Water ≤10.0 %
品級Grade USP級
(EP, USP testing specifications)
鑒別試驗Identity Pass by UV (In Acid and Base)
鑒別試驗Identity Pass by IR
比旋度Specific Rotation (anhydrous) 19 - 24 °
水分Water (by Karl Fischer) ≤12.0 %
灼燒殘渣Residue on ignition (Ash) ≤0.1 %
重金屬Heavy Metal ≤50 ppm
相關(guān)化合物Related Compounds Pass
相關(guān)物質(zhì)Related Substances Pass
(R)-甲氨蝶呤(R)- Methotrexate ≤3.0 %
含量Assay(Anhydrous basis) 98.0 - 102.0 %
殘留溶劑Residual Solvents Meets Requirements
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