The item under consideration is Leucine, N-carboxy-, N-benzyl ester, L- (CID 74840), an organic compound with the molecular formula C14H19NO4 and a molecular weight of 265.30 g/mol. Its IUPAC name is (2S)-4-methyl-2-(phenylmethoxycarbonylamino)pentanoic acid. The compound's structure can be represented by the SMILES string "CC(C)C[C@@H](C(=O)O)NC(=O)OCC1=CC=CC=C1". This substance falls under the category of Amino Acids and Amino Acid Derivatives, specifically Amino acids, protected, within the Benzyl / Cbz / Z subcategory. It carries a Warning signal word as per the Globally Harmonized System of Classification and Labelling

• CAS Number: 2018-66-8
• Molecular Formula: C14H19NO4
• Molecular Weight: 265.30
• Exact Mass: 265.13140809
• GHS Signal Word: Warning
• Hazard Statements:
• H226 (20%): Flammable liquid and vapor [Warning Flammable liquids]