Butyne-DOTA Product Catalog # Size Price (USD) Quantity Butyne-DOTA330412-100MG100 mg$500.00 - Butyne-DOTA-100mg quantity + Butyne-DOTA330412-500MG500 mg$1,000.00 - Butyne-DOTA-500mg quantity + Butyne-DOTA330412-1G1 g$1,500.00 - Butyne-DOTA-1g quantity + Butyne-DOTA330412-5G5 g$3,000.00 - Butyne-DOTA-5g quantity + Add to cart Description CAS #: 2125661-62-1 Molecular Formula: C20H33N5O7 Molecular Weight: 455.5