This product is calculated on dry goods, per 1mg potency is not less than 975
units of tetracycline hydrochloride.
?Properties? This product is light yellow crystalline powder; odorless; placed after
deep color gradient, color in daylight rapidly become darker in alkaline solution
This product is slightly soluble in ethanol, very slightly soluble in water, insoluble
in chloroform or ether, dissolved in dilute acid.
Absorption coefficient of this product 10mg, accurately weighed, set 100ml flask,
add salt acid (0.1mol / L) 10ml dissolved, diluted with water to the mark, the
precise amount of 10ml, 75ml of water and sodium hydroxide solution (2mol / L )
12ml, diluted with water to 100ml, and mix. According to spectrophotometry
(Chinese Pharmacopoeia 1985 edition two Appendix 20), at 380 ± 1nm
wavelength determination, since the sodium hydroxide solution (2mol / L) within 6
minutes, the absorption coefficient (E1% 1cm) should 390 ~ 420.
[Identification] (a) the product of about 0.5mg, sulfuric acid 2ml, which were dark
purple, plus 1 drop of ferric chloride solution, the solution turns reddish brown.
(2) to take this product with tetracycline hydrochloride standard, were added
methanol containing 0.5mg per 1ml of the solution, according to relevant material
under thin layer chromatography test, learn the two solutions 1?l, respectively,
points on the same plate with the test of the significant main spots of color and
location should be the same as with the standard spots.
[Check] acidity of this product, add water containing 10mg per 1ml suspension,
according to the determination (Chinese Pharmacopoeia 1985 edition two
Appendix 33), pH value should be 3.0 to 7.0 .
For substances of this product, the addition of methanol per 1ml solution
containing 5mg (1); precision that take four - Poor to dehydration tetracycline
reference standard amount of methanol produced per 1ml solution containing
0.025mg (2); Weigh tetracycline hydrochloride with a 4 - Poor to dehydration
tetracycline reference standard amount of methanol produced per 1ml containing
the tetracycline hydrochloride 0.05mg with a 4 - Poor tetracycline 0.025mg to
dehydration mixture (3), thin layer chromatography method test (Chinese
Pharmacopoeia 1985 edition two Appendix 26), to learn the three solutions 1?l,
respectively, in the same plate with ethyl acetate - acetone - water (60:30:6) as
the agent, at room temperature 14 ~ 24 ? expanded, air dried, smoked with
ammonia vapors, UV light (365nm), under review, the solution (a) the
fluorescence intensity of the spots were the solution (2) of the corresponding
spots were fluorescence intensity compared to no more solution (3) should be
displayed two distinct spots, or should be re-test.
Impurity absorption of this product 50mg, accurately weighed, set 25ml
volumetric flask, add salt acid (0.1mol / L) 2.5ml dissolved, diluted with water to
the mark, according to spectrophotometry (Chinese Pharmacopoeia 1985 edition
of Appendix 20 ), 1 hour at 430 ± 1nm wavelength determination, the absorption
Drying of this product, at 105 ? drying to constant weight, less weight loss should
not exceed 10.0% (Chinese Pharmacopoeia 1985 edition two Appendix 40).
Heavy metals in this product 0.5g, according to inspection (Appendix · 67),
containing heavy metals should not exceed fifty millionths.
Abnormal toxicity of this product, salt acid (0.1mol / L; acid salt 20mg per 1ml)
dissolved, add sterile saline solution per 1ml solution containing 2,000 units,
according to inspection (Chinese Pharmacopoeia 1985 edition two Appendix 86),
administered by intravenous injection, should be specified.
?Assay Weigh accurately the amount of goods, salt acid (0.1mol / L; acid salt
10mg per 1ml) to dissolve, then sterile water containing about 1ml each 1,000
units of the solution, according to antibiotic microbial test method for the
determination (Chinese Pharmacopoeia 1985 edition two Appendix 95). 1,000
units of tetracycline hydrochloride equivalent to 1mg of C22H24N2O8 · HCl.
[The role and use antibiotic medicines. There are broad-spectrum antimicrobial
effect. Mainly for rickettsial diseases, brucellosis, mycoplasma pneumonia,
chlamydia, can also be used for sensitive gram-positive cocci and negative
?Usage and Dosage? 0.5g orally once a day 3 to 4 times.
Children over 8 years old per kg body weight daily 30 ~ 40mg, 3 to 4 times daily.
[Note] superinfection and long-term use can cause liver damage. Liver and
kidney dysfunction, caution. Children under 8 years old and pregnant women,
[Storage] Sealed or strict closure, shading, in a dry place. Valid for three years.
[Agents] (1) tetracycline tablets (2) tetracycline eye ointment (3) tetracycline
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Preparation of TLC plates diatomite G amount, plus 10 times the amount of
hydrochloric acid (6mol / L) boiled for 10 to 15 minutes, filtered, washed with
water until the filtrate alkaline Congo red indicator VIS, and then with a 5-fold
amount of acetone - ethyl acetate (5:1), dried, filtered, dried at 105 ?. Of dried
celite 1.5g, plus sodium hydroxide solution (5mol / L) adjusted to pH 8.2 to 8.5 to
5% of ethylene diamine tetraacetic acid disodium salt solution 5ml, into a paste,
the uniform coating on the 10 × 20cm glass plate at room temperature to no
significant traces of water, dried for 1 hour at 105 ?, spare.
Blepharitis is inflammation of the eyelid margins and secondary conjunctivitis. The typical signs are redness of the lid margins, an abnormal tear film, and blocked Meibomian glands (the oil secreting glands in the eyelids). The Meibomian gland and tear film changes are difficult to visualize without a microscope. Meibomian secretions become viscous and chemically irritating when exposed to inf
Aufklärung über die Kontrastmittelgabe bei Computertomographie Arzt / MTA: ………. / …………. Sehr geehrte Patientin, sehr geehrter Patient!Ihr behandelnder Arzt hat Sie zur Durchführung einer Computertomographie an unsüberwiesen. Abhängig von der jeweiligen Fragestel ung kann es erforderlich sein, einintravenöses Kontrastmittel zu verabreichen. Hierdurch werden krankhafte Proz