Doxycycline
Synonyms
2-Naphthacenecarboxamide, 4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-, (4S,4aR,5S,5aR,6R,12aS)-;
Category
Non-ionic surfactant
> Amine
>> Alicyclic Amine
>>> Polycyclic Amine
Chemical Numbering System
CAS: 564-25-0
EINECS: 209-271-1
Molecular Formula & Molecular Weight
Molecular Formula: C22H24N2O8
Molecular Weight: 444.43
Structure
Properties
Appearance (1), solid.
Solubility slightly soluble in water.
Stability stable.
Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS label: 
Animal Toxicity
Table 1 Animal toxicity values
|
dog intravenous LD50 |
> 100mg/kg[1] |
|
dog oral LD50 |
> 500mg/kg[1] |
|
mouse intraperitoneal LD50 |
410mg/kg[1] |
|
mouse intravenous LD50 |
241mg/kg[1] |
|
mouse oral LD50 |
1870mg/kg[1] |
|
rat intraperitoneal LD50 |
378mg/kg[1] |
|
rat intravenous LD50 |
228mg/kg[1] |
|
rat oral LD50 |
> 2000mg/kg[1] |
Reproductive effect[1].
Human Toxicity
Table 2 Human toxicity values
|
women oral TDLo |
68mg/kg/24D-I[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent antimicrobial, antibacterial, anti-infective abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid |
|
|
Heavy metals (as Pb), mg/kg, ≤ |
20 |
|
As, mg/kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents -- Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents -- Determination of total arsenic
3, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
Major Uses
1, Typical applications
Use as antibiotic.
Manufacturers
References
[1]: ChemIDplus. 564-25-0, Doxycycline
Update: 20200718(1);