Molecular Formula | C21H21ClN2O8.ClH |
Molar Mass | 501.32 |
Melting Point | >245°C (dec.) |
Water Solubility | Soluble in water. |
Solubility | Soluble in water (20 mg/ml), DMSO, and methanol. |
Appearance | powder |
Color | Light Yellow to Yellow |
Merck | 13,2905 |
BRN | 5705221 |
pKa | pKa 3.3 (Uncertain) |
Storage Condition | Sealed in dry,Store in freezer, under -20°C |
MDL | MFCD00082371 |
Physical and Chemical Properties | Melting point> 245°C (dec.) storage conditions − 20°C solubility H2O: 20 mg/mL, clear, very deep green yellow form powder Merck 13,2905 |
Use | An antibiotic related to tetracycline and produced by streptomyces aureofaciens. |
Hazard Symbols | Xi - Irritant |
Risk Codes | 43 - May cause sensitization by skin contact |
Safety Description | 36/37 - Wear suitable protective clothing and gloves. |
WGK Germany | 2 |
RTECS | QI7700000 |
FLUKA BRAND F CODES | 8-10-21 |
HS Code | 29413020 |
Toxicity | LD50 orally in rats: 2372 mg/kg (Goldenthal) |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Overview | norchlortetracycline, mainly used in the production of minocycline and tigecycline. Its antibacterial activity is strong, the antibacterial spectrum is similar to chlortetracycline, its effect is stronger than tetracycline and oxytetracycline, and it is more stable than chlortetracycline. It is an important raw material product in the field of biological medicine, however, in the current production process of norchlortetracycline, due to the long-term technical blockade of foreign countries to our country, the production of norchlortetracycline products in our country is relatively lagging behind and lacks high efficiency and reliability, and low-cost production process of norchlortetracycline products. |
attribute | norchlortetracycline, alias dicyclin, desmethylchlortetracycline, etc, it is a tetracycline antibiotic produced by the fermentation of Streptomyces Aureus. Its antibacterial spectrum is similar to that of chlortetracycline, and its antibacterial effect is stronger than tetracycline and more stable than chlortetracycline. |
extract | 35 liters of fermentation broth containing 6.0g/L of norchlortetracycline, adjust the temperature to 5-10 ℃, add 0.05wt% sodium sulfite 35g, adjust the temperature to 10 ℃, use oxalic acid to adjust the pH = 1.5±0.2, stir for 20 minutes, use Nanjing Jiuwu ceramic membrane filtration, ceramic Membrane flux 30 L/h; Filtrate 70 L; Filtrate 122 resin, flow rate 2BV/h, after the completion of the use of pH = 6.8-7.0 of the drinking water top wash 0.5 hours, the decolorization of 72 liters; organic nanofiltration membrane module of GE company of USA, whose decolorizing liquid has a molecular weight cut-off of 150 daltons, at a pressure of 1.5mpa and a temperature of 5-10 ℃, was used to obtain 4 liters of concentrated liquid; under the condition of stirring the concentrated solution, the temperature was adjusted to 5-8 ° C., and the pH was adjusted to 6.5±0.2 with 0.1M ammonia water to obtain a precipitated suspension, which was further stirred for 30 minutes and allowed to stand for 30 minutes, the crude product of demethylchlortetracycline was obtained by solid-liquid separation; The crude product of demethylchlortetracycline was refined by urea double salt method to obtain the finished product of demethylchlortetracycline, and dried to obtain 152g of demethylchlortetracycline hydrochloride. The yield was 72.38%; The product was submitted to meet EP and USP standards. |
biological activity | Demeclocycline HCl is a tetracycline antibiotic that inhibits bacterial protein synthesis and is used to treat bacterial infections. |