Dimethyl sulfone: isolation from cows' milk

Williams KI, Burstein SH, Layne DS · Proceedings of the Society for Experimental Biology and Medicine

The original isolation of dimethyl sulfone (MSM) from an animal product, and essentially still the only one. It is milk — not meat, bone, cartilage or stock. Relevant to this guide because it anchors what the documented animal source of MSM actually is.

Population

Cows' milk (analytical isolation, no subjects)

Intervention

Chemical isolation and identification of dimethyl sulfone

Limitations

A 1966 analytical note with no abstract indexed and no quantitative dietary context; establishes presence in milk, nothing about joints.