Name | Specifications | Packing | Price | Delivery |
Methotrexate | USP | 1g | RMB 858 | 现货 |
Methotrexate | 99% | 5g | RMB 2002 | 促销 |
Methotrexate | 99% | 1g | RMB 686.4 | 促销 |
Methotrexate | 99% | 500mg | RMB 404.8 | 促销 |
Methotrexate | 99% | 250mg | RMB 228.8 | 促销 |
外观Appearance 黄色至橙色粉末
核磁Proton NMR spectrum Conforms
纯度Purity ≥99.0% (HPLC,面积归一法)
比旋光度Specific rotation [a]20/D +19.0 ~ +24.0 °(C=0.1,1N NaOH)
硫酸盐灰分sulfated ash ≤0.1%
水分Water ≤10.0 %
品级Grade USP级
(EP, USP testing specifications)
鉴别试验Identity Pass by UV (In Acid and Base)
鉴别试验Identity Pass by IR
比旋度Specific Rotation (anhydrous) 19 - 24 °
水分Water (by Karl Fischer) ≤12.0 %
灼烧残渣Residue on ignition (Ash) ≤0.1 %
重金属Heavy Metal ≤50 ppm
相关化合物Related Compounds Pass
相关物质Related Substances Pass
(R)-甲氨蝶呤(R)- Methotrexate ≤3.0 %
含量Assay(Anhydrous basis) 98.0 - 102.0 %
残留溶剂Residual Solvents Meets Requirements
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