Impureza (1-metil-2-feniletílico) carbamato de isobutilo (CAS 27822-62-4) é um contaminante sintético observado em processos de síntese de carbamatos e derivativos aromáticos. Caracteriza-se por existência de centros quirais e potenciais isômeros que exigem controle enantiomérico e cromatográfico. Sua presença pode comprometer a pureza de lotes | interferir em parâmetros analíticos e aumentar o risco de produtos de degradação por hidrólise ou termólise. A identificação e quantificação são tipicamente realizadas por HPLC-UV/LC-MS | GC-MS e RMN | e deve fazer parte da estratégia de controle de qualidade conforme diretrizes ICH para impurezas. Recomenda-se validação de métodos e limites de especificação adequados.
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