Girard's Reagent P - ≥95% , CAS No.1126-58-5

CAS: 1126-58-5 Cat. No.: G156811 Molecular Weight: 187.63 EC Number: 214-421-4

GRADE & PURITY ≥95%

Synonyms

GIRARD REAGENT P [MI] | 1-[(hydrazinecarbonyl)methyl]pyridin-1-ium chloride | 1-(2-Hydrazinyl-2-oxoethyl)pyridin-1-ium chloride | Pyridinium, 1-(2-hydrazinyl-2-oxoethyl)-, chloride (1:1) | SA2ND7EHY4 | SCHEMBL713375 | Pyridinium, 1-(2-hydrazino-2-oxoethyl

Storage

Room temperature,Argon charged,Desiccated,Cool

Shipped In

Normal

Specifications

Synonyms

GIRARD REAGENT P [MI] | 1-[(hydrazinecarbonyl)methyl]pyridin-1-ium chloride | 1-(2-Hydrazinyl-2-oxoethyl)pyridin-1-ium chloride | Pyridinium, 1-(2-hydrazinyl-2-oxoethyl)-, chloride (1:1) | SA2ND7EHY4 | SCHEMBL713375 | Pyridinium, 1-(2-hydrazino-2-oxoethyl

Specifications & Purity

≥95%

Storage

Room temperature, Argon charged, Desiccated, Cool

Shipped In

Normal

Purity

≥95%

Names and Identifiers

• Pubchem Sid: 504754570
• Pubchem Sid Url: https://pubchem.ncbi.nlm.nih.gov/substance/504754570
• Canonical Smiles: C1=CC=[N+](C=C1)CC(=O)NN.[Cl-]
• IUPAC Name: 2-pyridin-1-ium-1-ylacetohydrazide;chloride
• InChIKey: NDXLVXDHVHWYFR-UHFFFAOYSA-N
• INCHI: 1S/C7H9N3O.ClH/c8-9-7(11)6-10-4-2-1-3-5-10;/h1-5H,6,8H2;1H
• Isomeric SMILES: C1=CC=[N+](C=C1)CC(=O)NN.[Cl-]
• Molecular Weight: 187.63
• Reaxy-Rn: 3754235
• Reaxys-RN_link_address: https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=3754235&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Organoheterocyclic compounds
    • Class Pyridines and derivatives
      • Subclass Pyridinium derivatives

• Kingdom: Organic compounds
• Superclass: Organoheterocyclic compounds
• Class: Pyridines and derivatives
• Subclass: Pyridinium derivatives
• Intermediate Tree Nodes: Not available
• Direct Parent: Pyridinium derivatives
• Alternative Parents: Heteroaromatic compounds Carboxylic acid hydrazides Azacyclic compounds Organopnictogen compounds Organonitrogen compounds Organic oxides Organic chloride salts Hydrocarbon derivatives Carbonyl compounds
• Molecular Framework: Aromatic heteromonocyclic compounds
• Substituents: Pyridinium - Heteroaromatic compound - Carboxylic acid hydrazide - Carboxylic acid derivative - Azacycle - Carbonyl group - Hydrocarbon derivative - Organic oxide - Organic chloride salt - Organic salt - Organopnictogen compound - Organooxygen compound - Organonitrogen compound - Organic oxygen compound - Organic nitrogen compound - Aromatic heteromonocyclic compound
• Description: This compound belongs to the class of organic compounds known as pyridinium derivatives. These are compounds containing a pyridinium ring, which is the cationic form of pyridine.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Solubility: Soluble in water
• Sensitivity: Air & Moisture Sensitive
• Melt Point(°C): 203 °C
• Molecular Weight: 187.630 g/mol
• Hydrogen Bond Donor Count: 2
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 2
• Exact Mass: 187.051 Da
• Monoisotopic Mass: 187.051 Da
• Topological Polar Surface Area: 59.000 Ų
• Heavy Atom Count: 12
• Formal Charge: 0
• Complexity: 132.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 2

XLogP3

References

1. Ji Xu, Lingxiao Jia, Qixin Lan, Daheng Wu.  (2024)  Enhanced Thermal and Mechanical Properties of Cardanol Epoxy/Clay-Based Nanocomposite through Girard’s Reagent.  Polymers,  16  (11): (1528).  [PMID:38891475] [10.3390/polym16111528]

2. Xin Xin, Qi Zhang, Sujun Yan, Zilong Chen, Xinhai Zhu.  (2026)  Ultrasensitive LC-MS analysis of saccharides using 2-hydrazinyl-6-methoxy-1,3-benzothiazole as a novel derivatization reagent.  MICROCHEMICAL JOURNAL,      [PMID:] [10.1016/j.microc.2026.117921]