| CAS No.: | 127-33-3 |
|---|---|
| Formula: | C21h21cln2o8 |
| EINECS: | 204-834-8 |
| Type: | Pharmaceutical Intermediates |
| Appearance: | Powder |
| Colour: | White |
| Customization: |
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| DEMETHYLCHLORTETRACYCLINE CAS 127-33-3 |
| PRODUCT NAME:DEMETHYLCHLORTETRACYCLINE CAS NO.: 127-33-3 EINECS: 204-834-8 MOLECULAR WEIGHT: 464.855 FORMULA: C21H21CLN2O8 DENSITY:1.75 BOILING POINT:684.5°CAT760MMHG MELTING POINT:174-178 °C FLASH POINT:367.8°C REFRACTIVE INDEX:1.6000 (ESTIMATE) SOLUBILITY:1.4G/L(25 ºC) STABILITY:RAW MILK SAMPLES COLLECTED FROM BULK MILK TANKERS MAY BE SCREENED FOR THE PRESENCE OF TETRACYCLINE; ANTIBIOTICS USING RAPID SCREENING TESTS. IF TETRACYCLINE; RESIDUES ARE DETECTED, THE MILK MAY BE SHIPPED TO A LABORATORY FOR HIGH-PRESSURE LIQUID CHROMATOGRAPHY (HPLC) ANALYSIS. BECAUSE THE MILK MAY BE SHIPPED ON ICE; BLOCKS, IT IS IMPORTANT TO KNOW WHETHER TETRACYCLINE; RESIDUES ARE STABLE AT THAT TEMPERATURE AND FOR HOW LONG. CONTROL RAW MILK SAMPLES FORTIFIED WITH 50 PPB EACH CHLORTETRACYCLINE;, DEMECLOCYCLINE;, METHACYCLINE HYDROCHLORIDE;, MINOCYCLINE;, OXYTETRACYCLINE;, AND TETRACYCLINE; WERE INCUBATED AT 4 DEGREES C OR 25 DEGREES C, THEN ANALYZED USING A METAL CHELATE AFFINITY CHROMATOGRAPHY EXTRACTION AND HPLC. NO LOSS OF TETRACYCLINE; WAS OBSERVED AFTER 48 H OF STORAGE AT 4 DEGREES C OR 24 H AT 25 DEGREES C. LOSSES RANGING FROM 4 TO 13% AND 0 TO 18% WERE NOTED AFTER 72 H AT 4 DEGREES C AND 48 H AT 25 DEGREES C, RESPECTIVELY APPEARANCE:WHITE POWDER PURITY: ≥98% PACKAGING:ACCORDING TO CUSTOMER REQUESTS COUNTRY OF ORIGIN:CHINA |
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