Applications of 5-(Aminosulfonyl)-3-Chloro-1-Methyl-1H-Pyrazole-4-Carboxylic Acid Ethyl Ester in Industrial Manufacturing

5-(Aminosulfonyl)-3-Chloro-1-Methyl-1H-Pyrazole-4-Carboxylic Acid Ethyl Ester is a specialized intermediate recognized for its policy-critical role in agrochemical and pharmaceutical synthesis. We supply this compound directly to downstream manufacturers who demand adherence to rigorous industry standards within well-defined production frameworks. Our material supports core formulation stages in regulated industrial applications. Below we detail its established application scenarios, including regulatory compliance, production use levels, integration points, and types of finished goods in each field.

1. Agrochemical Herbicide Synthesis

Leading crop protection formulators employ this pyrazole ester as a key intermediate when manufacturing sulfonylurea herbicides, specifically in the synthesis of active ingredient structures targeting grass and broadleaf weed resistance. The material forms the backbone for conjugation steps under tightly controlled conditions, directly affecting herbicidal selectivity and environmental degradation profiles.

Industry compliance standards

• ISO 9001:2015 quality management
• GB 4839-2016 National Standards for Agricultural Chemicals (China)
• FAO/WHO Joint Meeting on Pesticide Specifications (JMPS)
• EU Regulation (EC) No 1107/2009 (Plant Protection Products)

Typical usage ratio

• 1.8–3.5% w/w, adjusted according to downstream synthetic yield targeting active compound purity above 98%

Downstream process integration

• Introduced at the heterocycle-building stage for sulfonylurea side chain coupling, before methylation and purification sequences

Final product types

• Herbicidal technical grade actives (e.g., Mesosulfuron-methyl, Iodosulfuron-methyl-sodium)
• Water-dispersible granules for direct agricultural use

2. Pharmaceutical Pyrazole API Intermediate Manufacturing

Pharmaceutical manufacturers rely on this compound as a non-proprietary building block in custom route design for molecules incorporating a pyrazole core with sulfonamide and carboxylate functionalities. Its use spans the development of anti-inflammatory and CNS-targeted small molecule APIs, where precise control over positional substitution and residual solvent limits is essential to comply with global pharmacopoeias.

Industry compliance standards

• Good Manufacturing Practice (ICH Q7)
• USP/NF pharmacopoeia for APIs
• European Pharmacopoeia (Ph. Eur.) monographs
• 21 CFR Part 211 (FDA cGMP)

Typical usage ratio

• 0.5–2.2 molar equivalents, calculated based on target API yield and impurity profile requirements per master batch record

Downstream process integration

• Applied in the early API synthetic stage for ring closure and sulfonamide substitution, often followed by stepwise derivatization and crystallization

Final product types

• Pyrazole-based API key intermediates
• Bulk APIs for contract manufacturing organizations (CMOs)

3. Fine Chemical Intermediate for Veterinary Actives

Producers in the veterinary pharmaceutical sector use this molecule during the preparation of anthelmintic and ectoparasiticide actives, incorporating the sulfonamido-pyrazole scaffold to achieve structure–activity relationships mandated by animal health regulations. Its insertion influences both biological efficacy and safety assessment for target species, especially in dosage-formulated end products.

Industry compliance standards

• VICH GL23: Good Manufacturing Practice for Active Pharmaceutical Ingredients
• European Pharmacopoeia (Ph. Eur.) 10.0—Veterinary Section
• US FDA CVM Guidance 183
• ISO 22442: Animal-derived raw materials

Typical usage ratio

• 1.0–2.5% by mass in pre-final synthetic step, defined by batch scale and impurity carryover risk

Downstream process integration

• Deployed at the nucleophilic substitution phase to construct pyrazole-animal health actives, before purification and process validation

Final product types

• Veterinary API intermediates for anti-parasitic drugs
• Finished veterinary medicine tablets and injectables

4. Industrial Research and Development for Crop Protection Actives

Chemical R&D centers and pilot plants integrate this compound into development pipelines directed toward new-generation pyrazole-sulfonamide herbicides. It supports analytical validation batches and scalable process design while enabling isolation of novel structures with regulatory-friendly toxicological profiles, preparing for future market registrations.

Industry compliance standards

• OECD Principles of Good Laboratory Practice (GLP)
• ISO 17025 laboratory competence
• China National Standard GB/T 31270 (Safety Assessment of Chemicals)
• REACH compliance for safe handling in EU research

Typical usage ratio

• 0.2–1.5 g per reaction batch in research scale, increased proportionally during scale-up trials based on structure–activity elucidation

Downstream process integration

• Initiates molecular design reactions for compound library expansion in discovery programs, followed by isolation and regulatory documentation

Final product types

• Analytical reference standards for regulatory submission
• Pre-commercial herbicidal actives under pilot production

5. Custom Synthesis for Contract Chemical Production

Contract manufacturers executing exclusive processes on behalf of agrochemical and life science companies implement this intermediate to meet strict project specifications. Its input mass and purity grades derive from proprietary client protocols, and manufacturers ensure traceability and consistent performance through validated scale-up methodology and full audit support.

Industry compliance standards

• ISO 14001: Environmental Management
• Quality Agreement and Confidentiality Agreements as per client contracts
• GMP as requested for life science applications
• Responsible Care® chemical handling principles

Typical usage ratio

• Defined per client technical package, generally between 2–4% w/w for mainstream batch synthesis, with target purity levels set by QA/QC agreements

Downstream process integration

• Introduced in the main reaction kettle, monitored continuously by in-process control (IPC) analysts, with full batch record reconciliation

Final product types

• Custom-formulated intermediates and finished chemical substances for agrochemical pipelines
• Patent-protected actives and pre-registration samples for customer validation