Chapter 4 - The Chemistry of Aconitine

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“What chemical was in that vial, Arthur?” Molly asked, stepping forward from the stairs.
Arthur reached into his chef’s coat and pulled out a tiny, empty amber glass ampoule with a dropper cap.
Molly took the ampoule with a gloved hand and sniffed the cap cautiously from six inches away. The faint, metallic, bitter scent was unmistakable.
“It’s concentrated Aconitine,” Molly told Vincent. “Extracted from monkshood root, synthesized with a lipid-soluble dimethyl sulfoxide carrier. That’s why it absorbed through my skin so quickly. In the digestive tract, it binds to voltage-gated sodium channels, causing instant cardiac arrhythmia and paralysis.”
Vincent looked at her with sharp, calculated focus. “How long does it take to synthesize a batch like that?”
“It requires a temperature-controlled laboratory centrifuge and pharmaceutical-grade reagents,” Molly explained. “There are only three chemical supply depots in the state of Illinois that distribute lipid-carrier DMSO in commercial quantities.”
Grant pulled out his tablet, typing rapidly. “Julian Vance owns a pharmaceutical logistics facility on the Calumet River in South Chicago.”
“That’s where they’re holding the boy,” Vincent deduced with immediate, tactical certainty.
He looked at Arthur Bell. “Arthur, you will stay here under Grant’s protection. If you touch a phone or attempt to leave, I will consider you an active accomplice.”
Arthur wept, nodding frantically. “Please... just save my boy, Mr. Hale! He’s all I have!”
Vincent turned to Molly. “You’re coming with me.”
Molly blinked in surprise. “Me? Mr. Hale, I’m a waitress, not a soldier.”
“You are a clinical pharmacologist who knows the exact chemical signature of the poison they used,” Vincent replied, his hand resting gently on the small of her back as he guided her toward the rear exit. “And until Julian Vance is in chains, you are the most dangerous witness in this city.”
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Outside in the alley, a convoy of three armored black Cadillacs waited with engines purring in the cold rain.
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