Basiswissen Chemie 12 - Organische Chemie: Saure und basische funktionelle Gruppen

New channel Hirschhäuser Group: title sample judged 'whole' (Nearly every upload is a genuine organic chemistry lecture, tutorial, or mechanism explainer with only a couple of trivi); passed a second screen for sellers/exam-prep/re-uploads; 1 of 3 sampled transcripts showed teaching, 1 not; titles picked one by one, checked strictly; oEmbed verified.