Description

2-Heptadecyl-3H-Pyrazolo[1,5-A]Benzimidazole-6-Sulphonic Acid is a specialized organic compound featuring a benzimidazole core fused with a pyrazole ring and a long-chain heptadecyl substituent. This molecular structure is significant for its role as a key intermediate in the synthesis of advanced functional materials, particularly dyes and optical brighteners. It is primarily required by manufacturers in the chemical synthesis, specialty dyes, and polymer industries seeking to develop products with specific chromophoric or fluorescent properties.

Application

• Optical Brightener Intermediate: A critical building block in the synthesis of high-performance optical brightening agents (OBAs) for paper, textiles, and plastics.
• Specialty Dye Synthesis: Used as a precursor for manufacturing complex dyes, particularly those requiring a benzimidazole moiety for color fastness and stability.
• Functional Polymer Additive: Incorporated into polymer matrices to impart specific optical or UV-related properties.
• Research & Development: Serves as a valuable intermediate in academic and industrial R&D for novel organic electronic materials or fluorescent probes.
• Photographic Chemicals: Potential application in the formulation of specialized chemicals for photographic and imaging technologies.

Basic Information

Product Name	2-Heptadecyl-3H-Pyrazolo[1,5-A]Benzimidazole-6-Sulphonic Acid
CAS No.	24939-67-1
Molecular Formula	C₂₆H₄₁N₃O₃S
Molecular Weight	475.69 g/mol
Synonyms	2-Heptadecyl-3H-pyrazolo[1,5-a]benzimidazole-6-sulfonic acid; 6-Sulfo-2-heptadecylpyrazolo[1,5-a]benzimidazole; 2-Heptadecylpyrazolo[1,5-a]benzimidazole-6-sulfonic acid; Pyrazolo[1,5-a]benzimidazole-6-sulfonic acid, 2-heptadecyl-; 24939-67-1; NSC 403119; Light stabilizer intermediate; Optical brightener precursor.
EINECS	Contact for details

Quality Control

Our production of 2-Heptadecyl-3H-Pyrazolo[1,5-A]Benzimidazole-6-Sulphonic Acid adheres to stringent in-process controls to ensure batch-to-batch consistency and high purity. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with each shipment. We support compliance with global regulatory frameworks, and specifications can be aligned with customer-specific requirements for advanced synthesis applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Light yellow to beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.