Question: Are Tubby's and Sigma-Aldrich both located in the same country?
Sentence (from "Carbolabs"): Carbolabs uses phosgene to produce a wide array of chemicals including isocyanates, chloroformates, and isonitriles, although some reactions not involving phosgene such as the production of the fluorinating reagent DAST are also part of their established chemistries.
Relevant evidence: No