INTRODUCTION

1-(Difluoromethyl)-4-nitro-1H-pyrazole is a difluoromethyl aromatic compound with an active nitro group for reduction. It is used as an organic synthesis key starting material and intermediate in APIs.

Manufacture

It is manufactured by difluoromethylation of 4-nitro-1H-pyrazole.

SynonymN-difluoromethyl-4-nitropyrazole; 1H-Pyrazole, 1-(difluoromethyl)-4-nitro-
CAS No.956477-64-8
EINECS No.818-063-5
Molecular weight163.08
Structure

Applications

APIS : 1-(Difluoromethyl)-4-nitro-1H-pyrazole is used in synthesis of the following APIS:
Heterocyclic p2′ groups as factor XIa inhibitors
NLRP3 inflammasome modulators for the treatment of inflammatory, autoinflammatory, autoimmune and neoplastic diseases
an FXIa inhibitor treating thromboembolic disorders
Milvexian- anticoagulant
Intermediates
1-(difluoromethyl)-1H-pyrazole-4amine
More Products
In focus: Tris(2,4-ditert-butylphenyl) Phosphite
Products in focus · 30/06/2026

Tris(2,4-di-tert-butylphenyl) phosphite (TDPP) often recognized commercially as Irgafos 168 is a high-performance organophosphorus compound primarily utilized as secondary antioxidant and processing stabilizer. Its characteristic to undergo metallation reaction and provide a cost-effective synthetic processes allows it to be useful in biaryl coupling reactions.

READ MORE
In focus: Undecylenic acid, USP
Products in focus · 23/06/2026

Undecylenic acid is an unsaturated fatty acid naturally derived from castor oil. It is a colorless to pale yellow liquid with antifungal and antimicrobial properties. Chemically known as 10-undecenoic acid, it contains an 11-carbon chain with one double bond and is widely used in pharmaceuticals

READ MORE
In focus: 5-Nitro IsophthalicAcid (5-NIPA)
Products in focus · 16/06/2026

5-Nitro Isophthalic Acid (5-NIPA) is an aromatic organic compound derived from isophthalic acid. The presence of two carboxylic acid groups along with a nitro substituent at the 5-position makes it a valuable intermediate in the manufacture of fine chemicals, pharmaceuticals, dyes, pigments, and advanced materials.

READ MORE
In focus: Trichloroacetonitrile
Products in focus · 09/06/2026

Trichloroacetonitrile is a halogenated organic compound belonging to nitrile family. Its strong electrophilic character makes it a valuable intermediate in organic synthesis. It readily undergoes hydrolysis, particularly under acidic or basic conditions, yielding trichloroacetamide and related derivatives.

READ MORE
In focus: Zinc Dialkyl Dithio Phosphate
Products in focus · 02/06/2026

Zinc Dialkyl Dithio Phosphate (ZDDP) belongs to a  family of coordination compounds classified as members of transition metal dithiophosphate.

ZDDP is widely used based on a combination of different selected alcohols thus providing antiwear performance and enhanced thermal and hydrolytic stability. In combination with other additives, it is especially used for the formulation of hydraulic fluids, industrial gear oils, metalworking fluids, greases and automotive engine oils.

READ MORE
In focus: Dibutyl sulfide
Products in focus · 26/05/2026

Dibutyl sulfide is an organosulfur. It is a clear, colorless to pale yellow liquid characterized by a strong sulfur-like odor and is primarily used as an intermediate in chemical synthesis, specialty organic manufacturing, and research applications. The compound exhibits good solvency properties and moderate thermal stability, making it useful in industrial and laboratory processes involving sulfur-containing organic compounds.

READ MORE
In focus: Oleylamine
Products in focus · 19/05/2026

Oleylamine is a long-chain (C18) primary fatty amine derived from natural fatty acids, typically sourced from vegetable oils. It is produced from oleic acid through conversion of the carboxylic acid group (–COOH) into an amine group (–NH₂). With its optimal balance of hydrophobic chain length and reactive amine functionality it serves as a versatile and dependable building block for high-performance formulations.

READ MORE
In focus: Sodium Hyaluronate Ph. Eur.
Products in focus · 12/05/2026

Sodium Hyaluronate is the sodium salt of hyaluronic acid, a naturally occurring glycosaminoglycan known for its exceptional ability to retain moisture, along with its viscoelastic and biocompatible properties, making it highly valuable across pharmaceutical, cosmetic, and biomedical applications.

READ MORE
In focus: Pyrazinamide Ph. Eur.
Products in focus · 05/05/2026

Pyrazinamide is a first-line antitubercular drug used in combination therapy for the treatment of tuberculosis (TB). It is a synthetic pyrazine derivative and acts as a prodrug, which is converted into its active form (pyrazinoic acid) inside Mycobacterium tuberculosis.

READ MORE