Phenazopyridine Hydrochloride

Phenazopyridine Hydrochloride Structural Formula

Phenazopyridine Hydrochloride Structural Formula

Structural formula

Business number 03QU
Molecular formula C11H12ClN5
Molecular weight 249.70

2,6-Diamino-3-(phenylazo)pyridine hydrochloride,


2,6-Diamino-3-phenylazopyridine hydrochloride,

aromatic compounds

Numbering system

CAS number:136-40-3

MDL number:MFCD00035347

EINECS number:205-243-8

RTECS number:US7875000

BRN number:None

PubChem number:24860855

Physical property data

1. Traits Light red to dark purple crystalline powder.

2. Melting point 139°C.

3. Water-soluble0.01-0.1 g/100 mL at 20°C.

Toxicological data


Ecological data


Molecular structure data


Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors�: 3

3. Number of hydrogen bond acceptors: 5

4. Number of rotatable chemical bonds: 2

5. Number of tautomers: 12

6. Topological molecule polar surface area 89.6

7. Number of heavy atoms: 17

8. Surface charge: 0

9. Complexity: 237

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain atomic stereocenter Number of stereocenters: 0

13. Determine the number of stereocenters of chemical bonds: 0

14. Uncertain number of stereocenters of chemical bonds: 0

15. Total Number of price key units: 2

Properties and stability


Storage method


Synthesis method




BDMAEE:Bis (2-Dimethylaminoethyl) Ether

CAS NO:3033-62-3

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