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Structural formula

Physical competition number 0155
Molecular formula C5H9N3·2H3PO4
Molecular weight 307.13
label

Histamine diphosphate,

histamine phosphate,

Histamine diphosphate,

Histamine diphosphate

Numbering system

CAS number:51-74-1

MDL number:MFCD00150816

EINECS number:24877940

RTECS number:NI5425000

BRN number:3744619

PubChem ID:None

Physical property data

1. Character: Colorless prismatic crystal Or white crystalline powder. Odorless.


2. Density (g/mL,25/4): Undetermined


3. Relative vapor density (g/mL,AIR=1): Undetermined


4. Melting point (oC): 140


5. Boiling point (oC,Normal pressure): Undetermined


6. Boiling point (oC,5.2kPa): Undetermined


7. Refractive index : Undetermined


8. Flashpoint (oC): Undetermined


9. Specific optical rotation (o):Undetermined


10. Autoignition point or ignition temperature (oC): Undetermined


11. Vapor pressure (kPa,25oC): Undetermined


12. Saturation vapor pressure (kPa,60oC): Undetermined


13. Heat of combustion (KJ/mol): Undetermined


14. Critical temperature (oC): Undetermined


15. Critical pressure (KPa): Undetermined


16. Oil and water (octanol/Logarithmic value of partition coefficient (water): undetermined


17. Explosion limit (%,V/V): Undetermined


18. Lower explosion limit (%,V/V): Undetermined


19. Solubility: Soluble in4Part of water, slightly soluble in ethanol, almost insoluble in ether. Aqueous solutions are acidic to litmus.

Toxicological data

1, acute toxicity: rat abdominal cavity LD50: 1781 mg/kg; rat intravenous LDLo: 900 mg/kg; mouse intravenous Oral LD50: 807mg/kg; mouse abdominal cavity LD50: 913 mg/kg;
Mouse vein LD50: 333mg/kg; Rabbit vein LD50: 2763ug/kg; rabbit parenteral LDLo: 1 mg /kg; Guinea pig vein LD50: 608ug/kg;
Guinea pig parenteral LD50: 746ug/kg;
2, Reproductive toxicity: parenteral in female miceTDLo: 62500ug/kg, 8 days after conception

Ecological data

None

Molecular structure data

None

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP):


2. Number of hydrogen bond donors: 8


3. Number of hydrogen bond acceptors: 10


4. Number of rotatable chemical bonds: 2


5. Number of tautomers: 2


6. Topological molecular polar surface area (TPSA): 210


7. Number of heavy atoms: 18


8. Surface charge: 0


9. Complexity: 115


10. Number of isotope atoms: 0


11. Determine the number of atomic stereocenters: 0


12. The number of uncertain atomic stereocenters: 0


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


14. Uncertain number of chemical bond stereocenters: 0


15. Number of covalent bond units: 3

Properties and stability

Hygroscopic. Stable in air, but deteriorated by light. Aqueous solutions are acidic to litmus.

Storage method

Should be sealed Store in a dry and dark place.

Synthesis method

None

Purpose

Biochemical studies, determination of substrates for histaminase.

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