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162892

Sigma-Aldrich

Purpald®

≥99%

Synonym(s):

4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole, 4-Amino-5-hydrazino-1,2,4-triazole-3-thiol

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About This Item

Empirical Formula (Hill Notation):
C2H6N6S
CAS Number:
1750-12-5
Molecular Weight:
146.17
Beilstein:
134867
EC Number:
217-135-8
MDL number:
MFCD00003098
UNSPSC Code:
12352100
PubChem Substance ID:
24850011
NACRES:
NA.22
Pricing and availability is not currently available.

Quality Level

200

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)

functional group

hydrazine

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[1].
  • It was used as chromogen during the determination of catalase activity in small tissue samples[2].
  • It was used as reagent in determination of formaldehyde[3].
  • It was used for derivatization of neutral monosaccharides during HPLC[4].

Legal Information

Purpald is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictograms

Flame
GHS02

Signal Word

Danger

Hazard Statements

H228

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

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Certificates of Analysis (COA)

Lot/Batch Number
SDBB2381
STBL2340
STBK7566
STBJ8487
STBF9243V

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Journal of Liquid Chromatography, 16, 1105-1105 (1993)
Dawid Madej et al.
Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS), 64, 126689-126689 (2020-11-29)
The aim of this study was to investigate the effect of iron or/and zinc supplementation and termination of this treatment on the antioxidant defence of the male reproductive system and sperm viability in rats. The study consisted of 3 stages:
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.
Pre-concentration of cadmium, mercury and lead from natural water samples by silica gel functionalized purpald as a new chelating matrix for metal sorption.
Mohamed E Mahmoud et al.
Annali di chimica, 95(6), 465-471 (2005-09-03)
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Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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