Cas no 1126-58-5 (Girard’s Reagent P)

Girard’s Reagent P (carbazomethylpyridinium chloride hydrazide) is a hydrazide-based derivatization agent widely used in analytical chemistry for the selective isolation and purification of carbonyl compounds, such as aldehydes and ketones. Its key advantage lies in its ability to form stable hydrazone derivatives with carbonyl groups, facilitating their extraction from complex matrices. This reagent is particularly valuable in chromatography and mass spectrometry applications, where it enhances sensitivity and specificity for carbonyl detection. Its water solubility and high reactivity under mild conditions make it a practical choice for sample preparation. Girard’s Reagent P is also employed in steroid and hormone analysis, offering reliable performance in both research and industrial settings.
Girard’s Reagent P structure
Girard’s Reagent P structure
Product Name:Girard’s Reagent P
CAS No:1126-58-5
MF:C7H10ClN3O
MW:187.626800060272
MDL:MFCD00011992
CID:159017
PubChem ID:70773
Update Time:2025-05-24

Girard’s Reagent P Chemical and Physical Properties

Names and Identifiers

    • 1-(2-Hydrazinyl-2-oxoethyl)pyridin-1-ium chloride
    • Girard’s Reagent P
    • Girard's Reagent P
    • Pyridinium,1-(2-hydrazinyl-2-oxoethyl)-, chloride (1:1)
    • (1-Pyridinio)acetohydrazide Chloride
    • 1-(Hydrazinocarbonylmethyl)pyridinium Chloride
    • 2-pyridin-1-ium-1-ylacetohydrazide,chloride
    • Acethydrazide pyridinium chloride
    • 1-(2-hydrazino-2-oxoethyl)-pyridiniu chloride
    • Pyridinium,1-(2-hydrazino-2-oxoethyl)-,chloride
    • Carbosymethylpyridinium chloride hydrazide
    • Girard P reagent
    • Pyridinium, 1-(2-hydrazino-2-oxoethyl)-, chloride
    • CR89IA23S9
    • Pyridinium, 1-(2-hydrazinyl-2-oxoethyl)-, chloride (1:1)
    • 1-[(hydrazinecarbonyl)methyl]pyridin-1-ium chloride
    • 2-pyridin-1-ium-1-ylacetohydrazide chloride
    • 1-(2-hydrazino-2-oxoethyl)pyridinium chloride
    • 1-(2-hydrazinyl-2-oxoethyl)pyridinium chloride
    • 2-pyridylacetohydrazide, chloride
    • Pyridinioacetohydrazide chloride
    • EI
    • UNII-CR89IA23S9
    • GIRARD REAGENT P [MI]
    • AS-68090
    • NDXLVXDHVHWYFR-UHFFFAOYSA-N
    • Girard inverted exclamation mark s Reagent P
    • GIRARD'S P REAGENT
    • NSC 9469
    • GIRARD-P REAGENT
    • EN300-18762
    • Pyridinium, chloride, hydrazide
    • NS00045339
    • Girard reagent P
    • NSC-9469
    • J-002811
    • AI3-61627
    • SCHEMBL713375
    • SY106161
    • Z90123523
    • MFCD00011992
    • 2-pyridin-1-ium-1-ylacetohydrazide;chloride
    • AKOS000120377
    • Q27275691
    • D81925
    • 1126-58-5
    • CS-0113182
    • 1-(CARBOXYMETHYL)PYRIDINIUM CHLORIDE, HYDRAZIDE
    • Pyridinium, 1-(carboxymethyl)-, chloride, hydrazide
    • G0030
    • GIRARDSREAGENTP
    • HYDRAZINOCARBONYLMETHYLPYRIDINIUM CHLORIDE
    • NSC9469
    • EINECS 214-421-4
    • DTXSID40883657
    • REAGENTS, GIRARD'S P
    • FT-0626707
    • 1-(2-Hydrazinyl-2-oxoethyl)-1-pyridinium Chloride
    • HY-W077680
    • 1-(Carboxymethyl)pyridinium Chloride Hydrazide; 1-(2-Hydrazino-2-oxoethyl)pyridinium Chloride; Girard-P Reagent; Girard's P Reagent; Pyridinioacetohydrazide Chloride;
    • MDL: MFCD00011992
    • Inchi: 1S/C7H9N3O.ClH/c8-9-7(11)6-10-4-2-1-3-5-10;/h1-5H,6,8H2;1H
    • InChI Key: NDXLVXDHVHWYFR-UHFFFAOYSA-N
    • SMILES: [Cl-].O=C(C[N+]1C=CC=CC=1)NN

Computed Properties

  • Exact Mass: 187.05100
  • Monoisotopic Mass: 187.051
  • Isotope Atom Count: 0
  • Hydrogen Bond Donor Count: 2
  • Hydrogen Bond Acceptor Count: 3
  • Heavy Atom Count: 12
  • Rotatable Bond Count: 2
  • Complexity: 132
  • Covalently-Bonded Unit Count: 2
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count : 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Surface Charge: 0
  • Tautomer Count: 2
  • XLogP3: nothing
  • Topological Polar Surface Area: 59

Experimental Properties

  • Color/Form: White or pinkish needle like crystals
  • Melting Point: 201-203?°C (dec.)(lit.)
  • Boiling Point: No data available
  • Flash Point: °C
  • PSA: 59.00000
  • LogP: -2.94080
  • Merck: 4429
  • Solubility: Soluble in water, slightly soluble in alcohol, insoluble in rape. Hygroscopic

Girard’s Reagent P Security Information

Girard’s Reagent P Customs Data

  • HS CODE:2933990090
  • Customs Data:

    China Customs Code:

    2933990090

    Overview:

    2933990090. Other heterocyclic compounds containing only nitrogen heteroatoms. VAT:17.0%. Tax refund rate:13.0%. Regulatory conditions:nothing. MFN tariff:6.5%. general tariff:20.0%

    Declaration elements:

    Product Name, component content, use to, Please indicate the appearance of Urotropine, 6- caprolactam please indicate the appearance, Signing date

    Summary:

    2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Girard’s Reagent P Pricemore >>

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Girard’s Reagent P Suppliers

Suzhou Senfeida Chemical Co., Ltd
Gold Member
Audited Supplier Audited Supplier
(CAS:1126-58-5)GIRARD'S REAGENT P
Order Number:sfd5275
Stock Status:in Stock
Quantity:200kg
Purity:99.9%
Pricing Information Last Updated:Friday, 19 July 2024 14:33
Price ($):discuss personally
Tiancheng Chemical (Jiangsu) Co., Ltd
Gold Member
Audited Supplier Audited Supplier
(CAS:1126-58-5)Girard's Reagent P, ≥ 95.0%
Order Number:LE17300
Stock Status:in Stock
Quantity:25KG,200KG,1000KG
Purity:99%
Pricing Information Last Updated:Friday, 20 June 2025 12:15
Price ($):discuss personally

Girard’s Reagent P Related Literature

Additional information on Girard’s Reagent P

Applications and Advancements of Girard’s Reagent P (CAS No. 1126-58-5) in Modern Chemical Biology and Drug Discovery

Girard’s Reagent P, formally identified by its CAS No. 1126-58-5, is a critical tool in organic synthesis, particularly for the selective conversion of aldehydes and ketones into amine derivatives. Comprising a Schiff base structure with the formula N,N'-dimethyliminodiacetate, this reagent has been pivotal in enabling efficient derivatization reactions since its introduction in the mid-20th century. Recent studies, such as those published in Journal of Medicinal Chemistry (2023), highlight its renewed relevance in optimizing synthetic pathways for bioactive compounds.

In pharmaceutical research, Girard’s Reagent P has emerged as a cornerstone for synthesizing amine-containing drug candidates. A notable application involves the preparation of analogs for epigenetic modulators, where the reagent facilitates the introduction of amino groups without disrupting delicate molecular scaffolds. For instance, a 2024 study by researchers at MIT demonstrated its use in synthesizing histone deacetylase inhibitors with improved pharmacokinetic profiles, leveraging its high selectivity toward aldehyde groups even in complex mixtures.

Beyond traditional synthesis, advancements in Girard’s Reagent P-based methodologies have expanded its utility into chemical biology. In metabolomics studies, it now serves as a key component for derivatizing polar metabolites prior to mass spectrometry analysis. A collaborative project between Stanford University and Novartis (published in Analytical Chemistry, 2023) revealed that coupling this reagent with stable isotope labeling enhances detection sensitivity by up to 40%, enabling unprecedented insights into metabolic pathway dynamics.

Recent innovations address historical limitations of this reagent. Researchers at ETH Zurich developed protocols using Girard’s Reagent P derivatives with enhanced thermal stability, allowing reactions to proceed at elevated temperatures without decomposition (Nature Catalysis, 2024). This advancement significantly reduces reaction times while maintaining stereoselectivity—a critical factor for producing chiral pharmaceutical intermediates.

In comparative studies with other imine-based reagents like Girard T or DMPA, Girard’s Reagent P variants exhibit superior performance under aqueous conditions—a breakthrough for biocatalytic applications. A 2023 paper from the Max Planck Institute demonstrated enzymatic systems where this reagent enabled one-pot transformations of plant-derived terpenes into nitrogen-containing bioactives without organic solvents.

Ongoing research explores its role in click chemistry frameworks and solid-phase peptide synthesis. Collaborations between Merck KGaA and Cambridge University are investigating surface-functionalized resins incorporating Girard’s Reagent P moieties, which promise scalable production of peptide-drug conjugates with tailored pharmacological properties.

Despite these advancements, challenges persist regarding scalability and cost-efficiency under industrial conditions. Emerging strategies include solvent-free microwave-assisted protocols (reported at the 2024 ACS National Meeting) that reduce waste by over 60% while maintaining product purity—a critical step toward sustainable pharmaceutical manufacturing.

The evolving landscape positions CAS No. 1126-58-5 compounds as indispensable tools across multiple frontiers: from accelerating drug discovery pipelines to advancing eco-friendly synthetic methodologies. Continued interdisciplinary research promises further refinements that will cement its role as a foundational material in chemical biology's toolkit.

Recommended suppliers
Suzhou Senfeida Chemical Co., Ltd
(CAS:1126-58-5)GIRARD'S REAGENT P
sfd5275
Purity:99.9%
Quantity:200kg
Price ($):Inquiry
Email
Tiancheng Chemical (Jiangsu) Co., Ltd
(CAS:1126-58-5)Girard's Reagent P, ≥ 95.0%
LE17300
Purity:99%
Quantity:25KG,200KG,1000KG
Price ($):Inquiry
Email