ChemicalBook > CAS DataBase List > 7-Hydroxy-5-methyl-1,3,4-triazaindolizine

7-Hydroxy-5-methyl-1,3,4-triazaindolizine

Product Name
7-Hydroxy-5-methyl-1,3,4-triazaindolizine
CAS No.
2503-56-2
Chemical Name
7-Hydroxy-5-methyl-1,3,4-triazaindolizine
Synonyms
NSC 32071;NSC 511493;TOSLAB 29980;Triazaindolizine;BUTTPARK 125\40-15;7-Hydroxy-5-methyl-1;Trapidil intermediate;Trapidil EP Impurity A;Trapidil impurity A CRS;Trapidil interMediate product
CBNumber
CB3118175
Molecular Formula
C6H6N4O
Formula Weight
150.14
MOL File
2503-56-2.mol
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7-Hydroxy-5-methyl-1,3,4-triazaindolizine Property

Melting point:
280-283 °C(lit.)
Boiling point:
271.66°C (rough estimate)
Density 
1.3471 (rough estimate)
vapor pressure 
0-0Pa at 20-25℃
refractive index 
1.6700 (estimate)
storage temp. 
2-8°C
form 
solid
pka
1.14±0.53(Predicted)
color 
White to Almost white
Water Solubility 
INSOLUBLE IN COLD WATER
BRN 
609440
InChIKey
ZUIVNYGZFPOXFW-UHFFFAOYSA-N
LogP
-1.4 at 19℃ and pH7.1
CAS DataBase Reference
2503-56-2(CAS DataBase Reference)
NIST Chemistry Reference
Pyrimidin-7-ol, 5-methyl-s-triazolo-[1,5-a]-(2503-56-2)
EPA Substance Registry System
[1,2,4]Triazolo[1,5-a]pyrimidin-7-ol, 5-methyl- (2503-56-2)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36-37/39
WGK Germany 
1
RTECS 
XZ6133300
F 
9
Hazard Note 
Harmful
TSCA 
Yes
HS Code 
2933998090
Toxicity
mouse,LD50,intravenous,> 450mg/kg (450mg/kg),Oyo Yakuri. Pharmacometrics. Vol. 13, Pg. 597, 1977.
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

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
T1820002
Product name
Trapidil impurity A
Purity
European Pharmacopoeia (EP) Reference Standard
Packaging
20 mg
Price
$118
Updated
2025/07/31
Sigma-Aldrich
Product number
T1820002
Product name
Trapidil impurity A
Purity
European Pharmacopoeia (EP) Reference Standard
Packaging
t1820002
Price
$223
Updated
2024/03/01
TCI Chemical
Product number
H0273
Product name
7-Hydroxy-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidine
Packaging
25g
Price
$49
Updated
2025/07/31
TCI Chemical
Product number
H0273
Product name
7-Hydroxy-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidine
Packaging
500g
Price
$385
Updated
2025/07/31
TRC
Product number
H950300
Product name
7-​Hydroxy-​5-​methyl[1,​2,​4]​triazolo[1,​5-​a]​pyrimidine
Packaging
50g
Price
$85
Updated
2021/12/16
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7-Hydroxy-5-methyl-1,3,4-triazaindolizine Chemical Properties,Usage,Production

Chemical Properties

7-Hydroxy-5-methyl-1,3,4-triazaindolizine is white fine crystalline powder

Uses

Reactant for the synthesis of: • ;Ruthenium(II)-Hmtpo complexes1• ;Dihydroorotate dehydrogenase inhibitors with antimalarial activity2Reactant for the Vilsmeier reaction of conjugated carbocycles and heterocycles3Investigations of the pharmacological activity caused by binding to HIV TAR RNA4Additive to study the space charge layer in silver bromide microcrystals5

Uses

Reactant for the synthesis of:

  • Ruthenium(II)-Hmtpo complexes
  • Dihydroorotate dehydrogenase inhibitors with antimalarial activity

Reactant for the Vilsmeier reaction of conjugated carbocycles and heterocycles

Investigations of the pharmacological activity caused by binding to HIV TAR RNA

Additive to study the space charge layer in silver bromide microcrystals

reaction suitability

reaction type: C-C Bond Formation

7-Hydroxy-5-methyl-1,3,4-triazaindolizine Preparation Products And Raw materials

Raw materials

Preparation Products

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7-Hydroxy-5-methyl-1,3,4-triazaindolizine Suppliers

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View Lastest Price from 7-Hydroxy-5-methyl-1,3,4-triazaindolizine manufacturers

Career Henan Chemical Co
Product
7-Hydroxy-5-methyl-1,3,4-triazaindolizine 2503-56-2
Price
US $1.00/KG
Min. Order
1KG
Purity
97%
Supply Ability
200KG
Release date
2018-08-15

2503-56-2, 7-Hydroxy-5-methyl-1,3,4-triazaindolizineRelated Search:

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  • 2,4]Triazolo[1,5-a]pyrimidin-7-ol,5-methyl-[1
  • 5-a)pyrimidin-7-ol,5-methyl-s-triazolo(
  • 5-Methyl-7-hydroxy-1,3,4-triazindolizine
  • 5-Methyl-s-trazolo[1,5-]pyrimidin-7-ol
  • Methyl hydroxytriazaindolizine
  • 5-Methyl-s-triazolo[1,5-a]pyrimidin-7-ol,98%
  • 5-Methyl (1,2,4)trizolo(1,5-α)pyrimidin-7-ol
  • 5-Methyl-[1,2,4]triazolo[1,5-a]pyridin-7-ol
  • Trapidil interMediate product
  • 6-Methyl-4-hydroxy-1,3,3a,7-tetraazaindene
  • NSC 32071
  • NSC 511493
  • 7-Hydroxy-5-methyl-1
  • [1,2,4]Triazolo[1,5-a]pyrimidin-7-ol, 5-methyl-
  • 2,4)triazolo(1,5-a)pyrimidin-7-ol,5-methyl-(
  • 2,4]triazolo[1,5-a]pyrimidin-7-ol,5-methyl-[
  • 7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine 98%
  • TOSLAB 29980
  • 5-methyl-3H-[1,2,4]triazolo[1,5-a]pyridin-7-one
  • s-Triazolo(1,5-a)pyrimidin-7-ol, 5-methyl-
  • BUTTPARK 125\40-15
  • 5-METHYL-S-TRIAZOLE[1,5-ALPHA]PYRIMIDIN-7-OL
  • Triazaindolizine
  • 5-Methyl-7-hydroxy-1,2,4-triazolo[1,5-a]pyrimidine
  • 5-METHYL-7-HYDROXY-S-TRIAZOLO-4-(1,5A)PYRIMIDINE (STA SALZ)
  • 5- Methyl- 1, 3, 4- triazaindolizin- 7- ol
  • 7-Hydroxy-5-methyl-1,2,4-triazolo1,5-aüpyrimidine, 98+%
  • 7-HYDROXY-5-METHYL-[1,2,4]TRIAZOLO[2,3-A]PYRIMIDINE
  • 7-HYDROXY-5-METHYL-1,3,4-TRIAZAINDOLIZINE
  • 7-HYDROXY-5-METHYL-1,2,4-TRIAZOLO[1,5-A]PYRIMIDINE
  • 5-METHYL[1,2,4]TRIAZOLO[1,5-A]PYRIMIDIN-7-OL
  • 5-METHYL-7-HYDROXY-1,3,4-TRIAZAINDOLIZINE
  • 5 METHYL-5-TRIAZOLO[1,5-A]PYRIMIDIN-7-OL
  • 5-METHYL-S-TRIAZOLO[1,5-A]PYRIMIDIN-7-OL
  • 5-METHYL-SYM-TRIAZOLO[1,5-A]PYRIMIDIN-7-OL
  • 7-Hydroxy-5-methyl-1,2,4-triazaindolizine
  • 5-Hydroxy-7-methyl-1,3,8-triazaindolizine
  • 5-METHYL-S-TRIAZOLO(1 5-A)PYRIMIDIN-7-O&
  • 5-METHYL-S-TRIAZOLO-(1.5)-PYRIMIDINE-7-OL
  • 4-Hydroxy-6-methyl-1,3,3a,7-tetrazaindene
  • 5-Methyl-1,3,4-triazaindolizine-7-ol
  • 1,3,7-Triaza-4-hydroxy-6-methylindolizine
  • Trapidil impurity A CRS
  • Trapidil EP Impurity A
  • Trapidil Impurity 1 (Trapidil EP Impurity A)
  • 4-Hydroxy-6-methyl-1,3,3a,7-tetraazaindene
  • 5-Methyl-s-triazolo[1,5-a]pyrimidine-7-ol
  • Trapidil intermediate
  • 5-methyl-1H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one
  • 7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-<i>a</i>]pyrimidine
  • 2503-56-2
  • Heterocyclic Building Blocks
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  • Benzotriazoles
  • Building Blocks
  • C-C Bond Formation