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Products > API & intermediates > > Doxycycline hydrochloride
Product name : Doxycycline hydrochloride
CAS : 10592-13-9
Molecular Formula : C22H25ClN2O8
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Details:
VIBRAMYCIN, HCL;,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-,monohydrochloride;biocamycin;doxigalumicina;doxy-ii;doxy-tablinen;ecodox;hydramycin

Appearance: Yellow crystalline powder

Solubility: Free soluble in water and in methanol,sparing soluble in 

  ethanol. It dissolves in solutions of alkali hydroxide and carbonates.

Identification: A) tR of HPLC test 

            B) Sulphuric acid yellow Color reaction

            C) Chloride's reaction

pH: 2.0 to 3.0

Specific Optical Rotation: -105° to -120°,calculated on the

                     anhydrous,ethanol-free substance.

Specific Absorbance: 300-355 at 349nm,calculated on the anhydrous,

                  ethanol-free substance.

Light-absorbing Impurities: Not more than 0.07 at 490nm,calculated on 

                       the anhydrous,ethanol-free substance.

Related Substances:

  Metacycline: Not more than 2.0%

  6-epidoxycycline: Not more than 2.0%

  Any individual impurities: Not more than 0.5%

  Disregard limit: Not more than 0.1%

Ethanol: 4.3 to 6.0%

Heavy metals: Less than 50ppm

Water: 1.4% to 2.8%

Sulphated ash: Not more than 0.4%

Assay: 98.0-102.0% of C22H25ClN2O8,calculated on the

      anhydrous, ethanol-free substance.



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