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HomeProduct name list3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE

3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE

Synonym(s):5,6-Diphenyl-3-(2-pyridyl)-1,2,4-triazine;PDT

  • CAS NO.:1046-56-6
  • Empirical Formula: C20H14N4
  • Molecular Weight: 310.35
  • MDL number: MFCD00006462
  • EINECS: 213-878-7
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-12-18 14:07:02
3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE Structural

What is 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE?

Chemical properties

yellow powder

The Uses of 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE

3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine was employed as chromogenic-extraction reagent during spectrophotometric determination of iron in acids and acidic solutions. It was also employed as precolumn derivatizing reagent in the HPLC method with UV absorbance detection for the Fe(II) determination.

Indications

PDT with 20% ALA may be used for the treatment of actinic keratoses. The product is marketed as Levulan Kerastick (DUSA Pharmaceuticals, Valhalla, New York). The ALA is applied diffusely over the field with an applicator; the patient returns 1 to 3 hours later and is exposed to an activating light source. Once exposed to the light, ALA produces singlet oxygen, which damages the cell membrane. Sixty-six percent of patients had total clearing of lesions at 8 weeks using blue light exposure for 15 minutes. Patients experience a burning pain but heal with an excellent cosmetic result. Photosensitivity lasts for 24 hours. An optional regimen is to apply ALA only to visible actinic keratoses; however, this method will not treat subclinical lesions. A variety of lasers and light sources can be used to activate the ALA, including blue light, yellow light, and broadband light; however, many details remain to be worked out, such as the optimal incubation times for the ALA when using each of the various light sources.

Definition

ChEBI: 5,6-diphenyl-3-(2-pyridyl)-1,2,4-triazine is a member of 1,2,4-triazines.

General Description

3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine (PDT) reacts with Cu(II) perchlorate in ethanol to yield [Cu(PDT)2(ClO4)2].

Purification Methods

Purify it by repeated recrystallisation from EtOH/dimethylformamide. It is a reagent for estimating Fe(II) and Ru(II). [Chriswell & Schilt Anal Chem 46 992 1974, Kamra & Ayers Anal Chem 78 423 1975.]

Properties of 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE

Melting point: 191-193 °C (lit.)
Boiling point: 440.52°C (rough estimate)
Density  1.2028 (rough estimate)
refractive index  1.6400 (estimate)
storage temp.  Inert atmosphere,Room Temperature
form  powder to crystal
pka -0.06±0.63(Predicted)
color  Light yellow to Yellow to Orange
Water Solubility  Soluble in water.
BRN  542151
Stability: Stable. Incompatible with strong acids, strong oxidizing agents.
CAS DataBase Reference 1046-56-6(CAS DataBase Reference)
EPA Substance Registry System 1,2,4-Triazine, 5,6-diphenyl-3-(2-pyridinyl)- (1046-56-6)

Safety information for 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P270:Do not eat, drink or smoke when using this product.
P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE

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