Levene, P. A.'s team published research in Journal of Biological Chemistry in 110

Levene, P. A. published the artcileConfigurational relationships of acids of the phenethyl series to those of the normal series, HPLC of Formula: 1949-41-3, the publication is Journal of Biological Chemistry (1935), 311-21, database is CAplus.

Substances of the type Ph(CH₂)_m.CHMe(CH₂)_nCO₂H offer an opportunity to study the effect of the distance of the CO₂H group from the asym. center when the distance of the Ph group is kept constant or varied. d-Ph(CH₂)₂CHMeCO₂H has been configurationally correlated with l-Ph(CH₂)₂CHMeEt. Configurationally related 2-octyl- and 2-phenethylpropionic acids rotate polarized light in the same direction and, when m is 2, substitution of a hexyl by a Ph group does not change the direction of rotation of the EtCO₂H substituted in position 2. In the phenethyl series change from n = 0 to n = 1 brings about the same change in the direction of rotation as in the octyl series. Exhaustive hydrogenation of the phenethyl group has no effect on the direction of rotation except in the case of Ph(CH₂)₂CHMe(CH₂)₂Br in which the direction is reversed in the hexahydro derivative The following compounds were prepared by methods given in the preceding abstract All rotations are for the homogeneous substances. l-Ph(CH₂)₂CHMeCO₂H, b₂ 155¡ã, d₄³² 1.042, [M]_D³² -48.3¡ã, by CH₂(CO₂Et)₂ synthesis and resolved by the cinchonidine salt; d-Et ester, b₂ 120¡ã, d₄²⁸ 0.979, [M]_D²⁸ 7.6¡ã; l-Ph(CH₂)₂CHMeCH₂OH, b₁₇, 157¡ã, d₄²⁸ 0.968, [M]_D²⁸ -2.7¡ã; l-Ph(CH₂)₂CHMeCH₂Br, b₁₇ 151¡ã, d₄²⁷ 1.235, [M]_D²⁷ -5.8¡ã; l-Ph(CH₂)₂CHMeCH₂CO₂H, b₂ 162¡ã, d₄²⁷, 1.033, [M]_D²⁷ -6.04¡ã; l-Et ester, b₂ 131¡ã, d₄²⁷ 0.973, [M]_D²⁷ -4.9¡ã; l-Ph(CH₂)₂CHMe(CH₂)₂OH, b₁₇, 157¡ã, d₄²⁷ 0.959, [M]_D²⁷; -3.99¡ã; l-Ph(CH₂)₂CHMe(CH₂)₂Br, b₁₇ 160¡ã, d₄²⁷ 1.201, [M]_D²⁷ -2.29¡ã; l-Ph(CH₂)₂CHMeEt, b₁₅ 112¡ã, d₄²⁵ 0.855, [M]_D²⁷ -4.76¡ã; d-C₆H₁₁CH₂)₂CHMeCO₂H, b₂ 156¡ã, d₄²⁷ 0.968, [M]_D²⁷ 3.4¡ã; d-Et ester, b₁ 101¡ã d₄²⁸ 0.919, [M]_D²⁸ 4.92¡ã; l-C₆H₁₁(CH₂)₂CHMeCH₂OH, b₁₇ 141¡ã, d₄²⁷ 0.898, [M]_D²⁷ -2.09¡ã; C₆H₁₁(CH₂)₂CHMeCH₂Br, b₁₅ 142¡ã, [M] 0¡ã. l-C₆H₁₁(CH₂)₂CHMeCH₂CO₂H, b₂ 158¡ã, d₄²⁷ 0.959, [M]_D²⁷ -2.36¡ã; l-Et ester, b₁₇ 162¡ã, d₄²⁵ 0.918, [M]_D²⁵ -1.85¡ã; l-C₆H₁₁(CH₂)₂CHMe(CH₂)₂OH, b₁₇ 157¡ã, d₄²⁷ 0.893, [M]₄²⁷ -1.84¡ã; d-C₆H₁₁(CH₂)₂ CHMe(CH₂)₂Br, b₁₅ 151¡ã, d₄²⁷ 1.122, [M]₄²⁷ 1.12¡ã; l-C₆H₁₁(CH₂)₂CHMeEt, b₁₅ 110¡ã, d₄²⁷ 0.806, [M]_D²⁷ -2.82¡ã.

Journal of Biological Chemistry published new progress about 1949-41-3. 1949-41-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene, name is 2-Methyl-4-phenylbutanoic acid, and the molecular formula is C11H14O2, HPLC of Formula: 1949-41-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia