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(2R)-2-[(4-Ethyl-2,3-dioxopiperazinyl)carbonylamino]-2-(4-hydroxyphenyl)acetic acid D-(-)-α-[[(4-Ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]-4-hydroxybenzeneacet CAS:62893-24-7
Product name: | (2R)-2-[(4-Ethyl-2,3-dioxopiperazinyl)carbonylamino]-2-(4-hydroxyphenyl)acetic acid |
CAS No.: | 62893-24-7 |
Molecular weight: | 335.32 |
Useing: | Intermediate of Anti-infectives |
Item |
Standard |
Test Results |
Identification |
A.H-NMR:Comply with the structure |
Complies |
B.LC-MS:Comply with the structure |
Complies |
|
C.The IR spectrum of sample should be identical with that of reference standard. |
Complies |
|
D.HPLC-ESI-MS The retention time of the major peak in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the Standard preparation, as obtained in the Assay. |
Complies |
|
Loss on drying |
≤2.0% |
0.19% |
Heavy metals |
≤10 ppm |
<10ppm |
Water |
≤1.0% |
0.1% |
Sulphated ash |
≤0.5% determined on 1.0 g. |
0.009% |
Residue on ignition |
≤0.1% |
0.03% |
Related Substances |
Unspecified impurities: for each impurity ≤0.10% |
<0.10% |
Total Impurity ≤0.5% |
0.18% |
|
Purity |
≥99.0% |
99.7% |
Assay |
99.0%~101.0% (anhydrous substance). |
99.8% |
Storage |
Preserve in well-closed, light-resistant and airtight containers. |
Complies |
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