D-Luciferin 5G. D-Luciferin, CAS: 115144-35-9, MF: C11H7KN2O3S2, Purity: greater than or equal to 99. 8% by Chiral HPLC, Appearance: Light yellow solid, Synonym: (S)-2-(6-Hydroxy-2-benzothiazolyl)-2-thiazoline-4-carboxylic acid potassium salt, Firefly luciferin potassium salt, Size: 5G