[Chemical Name] (1R,5S,6S)-6-[(R)-1-Hydroxyethyl]-1-methyl-2-[1-(1,3-thiazolin- 2-yl)azetidin-3-yl]thio-1-carbapen-2-em-3-carboxylic acid [CAS No.] 161715-21-5 [Appearance] White crystalline powder [mp.] 170°C (decomp.)