Product Description Pyrazinoic acid hydrazide Other Details Molecular Formula: C5H6N4O Molecular Weight: 138.13 CAS Number: 768-05-8 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 250mg Leadtime:20 Days Sizes 2: 1g Leadtime:20 Days Sizes 3: 5g Leadtime:20 Days