Dyes Derived from 3-Methyl- Δ4-tetrahydrophthalic and 4-Methyl-Δ4-tetrahydrophthalic Acids. Part II. Effect of Introducing a Methyl Group at Different Positions (3 or 4) and also of Decreasing Unsaturation in the Phthalic Acid Portion of Phthalein Dyes
Zenodo (CERN European Organization for Nuclear Research)