Merck
All Photos(1)

162892

Sigma-Aldrich

Purpald®

≥99%

Synonym(s):
4-Amino-5-hydrazino-1,2,4-triazole-3-thiol, 4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole
Empirical Formula (Hill Notation):
C2H6N6S
CAS Number:
Molecular Weight:
146.17
Beilstein:
134867
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

≥99%

form

powder

mp

228-230 °C (dec.) (lit.)

solubility

0.5 M NaOH: soluble 50 mg/mL, clear to slightly hazy (yellow to yellow brown or orange solution)

SMILES string

NNc1nnc(S)n1N

InChI

1S/C2H6N6S/c3-5-1-6-7-2(9)8(1)4/h3-4H2,(H,5,6)(H,7,9)

InChI key

RDIMQHBOTMWMJA-UHFFFAOYSA-N

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Application

  • Purpald® was used in purpald assay for determination of bacterial polysaccharides containing substituted or unsubstituted glycol in residues such as glycerol, ribitol, arabinitol, furanosyl galactose and sialic acid.
  • It was used as chromogen during the determination of catalase activity in small tissue samples.
  • It was used as reagent in determination of formaldehyde.
  • It was used for derivatization of neutral monosaccharides during HPLC.

Packaging

100 g in poly bottle
5 g in glass bottle

Legal Information

Purpald is a registered trademark of Sigma-Aldrich Co. LLC

Pictograms

Flame

Signal Word

Danger

Hazard Statements

Hazard Classifications

Flam. Sol. 1

Storage Class Code

4.1A - Other explosive hazardous materials

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Journal of Liquid Chromatography, 16, 1105-1105 (1993)
Ashraf Gholizadeh
Physiology and molecular biology of plants : an international journal of functional plant biology, 26(4), 829-839 (2020-04-08)
DUF538 (domain of unknown function 538) proteins are known as a group of putative hypothetical proteins in a wide range of plant species. They have been identified from some plants challenged with various environmental stresses. However, a little is known
J S Beckman et al.
Proceedings of the National Academy of Sciences of the United States of America, 87(4), 1620-1624 (1990-02-01)
Superoxide dismutase reduces injury in many disease processes, implicating superoxide anion radical (O2-.) as a toxic species in vivo. A critical target of superoxide may be nitric oxide (NO.) produced by endothelium, macrophages, neutrophils, and brain synaptosomes. Superoxide and NO.
Mareike S Stephan et al.
Frontiers in microbiology, 11, 510638-510638 (2020-10-20)
Bacteriophages use a large number of different bacterial cell envelope structures as receptors for surface attachment. As a consequence, bacterial surfaces represent a major control point for the defense against phage attack. One strategy for phage population control is the
Prakt. Naturwiss. Chem., 40, 25-25 (1991)

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