Chemical intermediate

67-43-6

  • Product Name：Diethylenetriaminepentaacetic acid
  • Molecular Formula：C14H23N3O10
  • Specifications：99%
  • Molecular Weight：393.351
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Product Details;

CasNo： 67-43-6

Molecular Formula： C14H23N3O10

Appearance： White crystalline powder

Diethylenetriaminepentaacetic acid 67-43-6 with purity >99% Low price in stock

  • Molecular Formula:C14H23N3O10
  • Molecular Weight:393.351
  • Appearance/Colour:White crystalline powder 
  • Vapor Pressure:4.77E-25mmHg at 25°C 
  • Melting Point:219-220 °C(lit.) 
  • Refractive Index:1.5700 (estimate) 
  • Boiling Point:721.1 °C at 760 mmHg 
  • PKA:pK1:;pK2:2.55(+1);pK3:4.33(+2);pK4:8.60(-3);pK5,10.58 (25°C) 
  • Flash Point:389.9 °C 
  • PSA：196.22000 
  • Density:1.545 g/cm3 
  • LogP:-2.68460 

Diethylenetriaminepentaacetic acid(Cas 67-43-6) Usage

Production Methods

Pentetic acid is a pentaacetic acid triamine formed during the preparation of the amino carboxylic acid and its salt.

Pharmaceutical Applications

Pentetic acid is mainly used as a chelating agent in the preparation of imaging and contrast agents for radionuclide and magnetic resonance imaging.It is also used as a carrier excipient for neutron-capture isotopes in, for example, radiotherapy.Pentetic acid–isotope complexes have also been considered as model active substances in scintigraphic imaging studies.Pentetic acid has been used to chelate metal ions to reduce formation of reactive oxygen species during lyophilization.

Safety Profile

Moderately toxic by intraperitoneal route. When heated to decomposition it emits toxic fumes of NOx.

Safety

Pentetic acid is used in intrathecal and intravenous injection preparations. The pure form of pentetic acid is moderately toxic by the intraperitoneal route. LD50 (mouse, IP): 0.54 g/kg LD50 (mouse, oral): 4.84 g/kg

storage

The activity of pentetic acid as a chelating agent may cause unwanted effects in formulations containing metal ions. The desired chelate may be displaced by other ions from the formulation.

Purification Methods

Crystallise DTPA from water. Dry under vacuum or at 110o. [Bielski & Thomas J Am Chem Soc 109 7761 1987, NMR: Wenzel et al. Anal Chem 54 615 1982, Beilstein 4 IV 2454.]

Incompatibilities

The activity of pentetic acid as a chelating agent may cause unwanted effects in formulations containing metal ions. The desired chelate may be displaced by other ions from the formulation.

Regulatory Status

Included in the FDA Inactive Ingredients Database (intrathecal and intravenous injections). Included in intravenous and intra-articular injections licensed in the UK.

General Description

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InChI:InChI=1/C4H13N3.5C2H4O2/c5-1-3-7-4-2-6;5*1-2(3)4/h7H,1-6H2;5*1H3,(H,3,4)

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67-43-6 Process route

formaldehyd
50-00-0,30525-89-4,61233-19-0

formaldehyd

sodium cyanide
143-33-9,25596-52-5

sodium cyanide

3-azapentane-1,5-diamine
111-40-0,98824-35-2

3-azapentane-1,5-diamine

diethylenetriaminopentaacetic acid
67-43-6,84932-15-0

diethylenetriaminopentaacetic acid

Conditions
Conditions Yield
With aqueous alkali;
diethylenetriaminepentaacetic acid, Ga(III)-salt, dianion
119088-94-7

diethylenetriaminepentaacetic acid, Ga(III)-salt, dianion

2-(HO)-5-(SO<sub>3</sub>H)C<sub>6</sub>H<sub>3</sub>CHNC<sub>2</sub>H<sub>4</sub>NHC<sub>2</sub>H<sub>4</sub>NHC<sub>2</sub>H<sub>4</sub>NCHC<sub>6</sub>H<sub>3</sub>-2-(OH)-5-(SO<sub>3</sub>H)
139701-37-4

2-(HO)-5-(SO3H)C6H3CHNC2H4NHC2H4NHC2H4NCHC6H3-2-(OH)-5-(SO3H)

Ga(N(CHC<sub>6</sub>H<sub>3</sub>-2-O-5-SO<sub>3</sub>))CH<sub>2</sub>NHC<sub>2</sub>H<sub>4</sub>NHC<sub>2</sub>H<sub>4</sub>NCH(C<sub>6</sub>H<sub>3</sub>-2-O-5-SO<sub>3</sub>)

Ga(N(CHC6H3-2-O-5-SO3))CH2NHC2H4NHC2H4NCH(C6H3-2-O-5-SO3)

diethylenetriaminopentaacetic acid
67-43-6,84932-15-0

diethylenetriaminopentaacetic acid

Conditions
Conditions Yield
In water-d2; competition was followed by H-NMR spectroscopy, at 25 ° C;; aq. soln. of known pH evapd. to dryness, residue dissolved in equal amt. of D2O, left until equilibrium was reached (5 weeks);

67-43-6 Upstream products

  • 50-00-0
    50-00-0

    formaldehyd

  • 143-33-9
    143-33-9

    sodium cyanide

  • 111-40-0
    111-40-0

    3-azapentane-1,5-diamine

  • 119088-94-7
    119088-94-7

    diethylenetriaminepentaacetic acid, Ga(III)-salt, dianion

67-43-6 Downstream products

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    51992-80-4

    {Bis-[2-(bis-benzyloxycarbonylmethyl-amino)-ethyl]-amino}-acetic acid benzyl ester

  • 23911-26-4
    23911-26-4

    diethylenetriaminepentaacetic dianhydride

  • 1026294-76-7
    1026294-76-7

    ((2-{[2-(bis-carboxymethyl-amino)-ethyl]-carboxymethyl-amino}-ethyl)-{[2-(1-tritylsulfanyl-1H-imidazol-4-yl)-ethylcarbamoyl]-methyl}-amino)-acetic acid

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