ChemicalBook > CAS DataBase List > 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE

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

Product Name: 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE
CAS No.: 1046-56-6
Chemical Name: 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE
Synonyms: PDT;TIMTEC-BB SBB008869;3-(2-PYRIDYL)-5,6-DIPHENYLTRIAZINE;3-(2-Pyridinyl)-5,6-diphenyl-as-triazine;as-Triazine, 5,6-diphenyl-3-(2-pyridyl)-;5,6-DIPHENYL-3-(2-PYRIDYL)-1,2,4-TRIAZINE;3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE;4-triazine,5,6-diphenyl-3-(2-pyridinyl)-2;5,6-Ddiphenyl-3-(2-pyridyl)-1,2,4-triazine;3-(2-Pyridinyl)-5,6-diphenyl-1,2,4-triazine
CBNumber: CB1431610
Molecular Formula: C20H14N4
Formula Weight: 310.35
MOL File: 1046-56-6.mol

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

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)

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Safety

Hazard Codes: Xi
Risk Statements: 36/37/38
Safety Statements: 26-36
WGK Germany: 3
RTECS: XY8598150
TSCA: Yes
HS Code: 29336990

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 160415
Product name: 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine
Purity: ≥99%
Packaging: 5g
Price: $111
Updated: 2025/07/31

TCI Chemical

Product number: D1201
Product name: 5,6-Diphenyl-3-(2-pyridyl)-1,2,4-triazine
Purity: >98.0%(HPLC)(T)
Packaging: 1g
Price: $23
Updated: 2025/07/31

GFS CHEMICALS

Product number: 63302
Product name: PDT
Packaging: 5G
Price: $118.8
Updated: 2021/12/16

GFS CHEMICALS

Product number: 63303
Product name: PDT
Packaging: 10g
Price: $198.03
Updated: 2021/12/16

GFS CHEMICALS

Product number: 63301
Product name: PDT
Packaging: 1g
Price: $40.35
Updated: 2021/12/16

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3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE Chemical Properties,Usage,Production

Chemical Properties

yellow powder

Uses

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.]

3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE Preparation Products And Raw materials

Raw materials

Preparation Products

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1046-56-6, 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINERelated Search:

3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE Ferrozine disodium salt Ferrozine sodium 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE-P,P'-DISULFONIC ACID, DISODIUM SALT HYDRATE, 98+% 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-p,pμ-disulfonic acid hydrate monosodium salt 2,4-BIS[5,6-DI(P-SULFOPHENYL)-1,2,4-TRIAZIN-3-YL]PYRIDINE TETRASODIUM SALT 1,2,4-Triazine 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-p,p'-disulfonic acid, disodium salt hydrat 2,4-BDTP FERROZINE IRON REAGENT, HYDRATE, PURE, 98+% FERROZINE(R) IRON REAGENT 5,6-DIPHENYL-1,2,4-TRIAZINE 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE-P,P'-DISULFONIC ACID MONOSODIUM SALT 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine sulfonate, sodium salt 3-[2-(5,6-diphenyl-1,2,4-triazin-3-yl)-4-pyridyl]-5,6-diphenyl-1,2,4-triazine 3-(2-PYRIDYL)-5,6-BIS(4-SULFOPHENYL)-1,2,4-TRIAZINE DISODIUM SALT HYDRATE 3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZINE DEPOSITED ON AMBERLITED-2 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine disulfonic acid, disodium salt

TIMTEC-BB SBB008869

PDT

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

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

5,6-Diphenyl-3-(2-pyridyl)-1,2,4-triazine~PDT

3-(2-PYRIDYL)-5,6-DIPHENYL-1,2,4-TRIAZIN E, 99+%

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

3-(2-PYRIDYL)-5,6-DIPHENYLTRIAZINE

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

3-(2-Pyridinyl)-5,6-diphenyl-1,2,4-triazine

3-(2-Pyridinyl)-5,6-diphenyl-as-triazine

5,6-Ddiphenyl-3-(2-pyridyl)-1,2,4-triazine

3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine p.a.

5,6-diphenyl-3-(pyridin-2-yl)-1,2,4-triazine

1,2,4-Triazine, 5,6-diphenyl-3-(2-pyridinyl)-

4-triazine,5,6-diphenyl-3-(2-pyridinyl)-2

5,6-Diphenyl-3-(2-pyridinyl)-1,2,4-triazine

as-Triazine, 5,6-diphenyl-3-(2-pyridyl)-

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

5,6-Diphenyl-3-(2-pyridyl)-1,2,4-triazine&gt

3(2-Pyridyl)-5,6-Diphenyl-1,2,4-Triazine (PDT) extrapure AR, 99%

3-(2-PYRIDYL)-5,6-DIPHENYL1,2,4-TRIAZINE AR

3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine in Cyclohexane

3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine in Acetonitrile

1046-56-6

C20H14N4

Bipyridyls, etc. (Chelating Reagents)

Chelating Reagents

Building Blocks

Heterocyclic Building Blocks

Triazines

Heterocyclic Compounds

Analytical Chemistry

Bipyridyls, etc. (Chelating Reagents)

Chelating Reagents