Description

1,3-Bis(2,6-Di-I-Propylphenyl)Imidazolidin-2-Ylidene)(2-I-Propoxy-5-Nitrobenzylidene) Ruthenium(Ii) Dichloride Nitro-Grela Sipr is a highly specialized, second-generation ruthenium-based olefin metathesis catalyst. This compound is valued for its enhanced thermal stability and activity, particularly in challenging cross-metathesis reactions. It is primarily required by R&D chemists and process engineers in the pharmaceutical, agrochemical, and advanced materials sectors for synthesizing complex molecules and polymers.

Application

• Pharmaceutical Intermediate Synthesis: Key for constructing complex, biologically active molecules through ring-closing metathesis (RCM) and cross-metathesis (CM).
• Agrochemical Production: Used in the development of novel active ingredients requiring robust catalytic systems.
• Polymer & Material Science: Enables the synthesis of specialty polymers, including functionalized polyolefins and dendrimers, via ring-opening metathesis polymerization (ROMP).
• Fine Chemical Manufacturing: Facilitates efficient, atom-economic routes to high-value fine chemicals and fragrances.
• Academic & Industrial R&D: A critical tool for methodological development in organic synthesis and catalysis research.
• Custom Synthesis Services: Employed by contract research and manufacturing organizations (CROs/CMOs) for client projects.

Basic Information

Product Name	1,3-Bis(2,6-Di-I-Propylphenyl)Imidazolidin-2-Ylidene)(2-I-Propoxy-5-Nitrobenzylidene) Ruthenium(Ii) Dichloride Nitro-Grela Sipr
CAS No.	928795-51-1
Molecular Formula	C39H50Cl2N4O3Ru
Molecular Weight	794.82 g/mol
Synonyms	Nitro-Grela Catalyst; Nitro-Grela SIPr Catalyst; (2-Isopropoxy-5-nitrophenyl)methylene Nitro-Grela SIPr Ruthenium(II) Dichloride; Ruthenium, [1,3-bis(2,6-di-1-methylethylphenyl)-2-imidazolidinylidene]dichloro(2-isopropoxy-5-nitrophenyl)methylene-; Grubbs-Hoveyda Type Nitro-Grela Catalyst; Second-Generation Nitro-Grela SIPr Catalyst; Ru-based Metathesis Catalyst (Nitro-Grela type); 928795-51-1
EINECS	Contact for details

Quality Control

Our high-purity catalyst is manufactured under controlled conditions to ensure batch-to-batch consistency and optimal performance. Each lot undergoes rigorous analytical testing, including NMR, HPLC, and elemental analysis, to confirm identity and purity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., argon or nitrogen) at 2-8°C to maintain stability and prevent decomposition. The product is light-sensitive and easily oxidized; prolonged exposure to air, moisture, or ambient temperatures should be avoided.

Specification

Item	Specification
Appearance	Dark green to brown crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95%
Residual Solvents (GC)	Meets ICH guidelines
Elemental Analysis	Conforms to theoretical values

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