Afatinib Impurity 76(CAS: 13991-36-1)

Afatinib Impurity 76 is a solid with a crystalline form. It has a molecular weight of approximately 427.8 g/mol. This impurity is poorly soluble in water but has good solubility in organic solvents such as DMSO and methanol. It is relatively stable under normal storage conditions but may degrade under acidic or basic conditions.

Afatinib Impurity 76 is typically synthesized through a multi-step process involving Friedel-Crafts alkylation, cyclization, and reduction steps. Common catalysts used in the synthesis include aluminum chloride and palladium-based catalysts. The overall yield is around 70%, with high selectivity to the desired product.

Afatinib Impurity 76 is primarily used in the pharmaceutical industry as an intermediate in the synthesis of afatinib, a tyrosine kinase inhibitor used to treat certain types of lung cancer. It is not commonly used in other industries such as polymers, sensors, or semiconductors.

Afatinib Impurity 76 should be handled with caution due to its potential to degrade under acidic or basic conditions. It should be stored in a tightly closed container and protected from moisture and light. Handling should be performed in a well-ventilated area or a fume hood, and appropriate personal protective equipment (PPE) such as gloves and safety glasses should be worn. In case of a spill, immediately clean up with caution and consult the safety data sheet (SDS) for further instructions.