https://webbook.nist.gov/cgi/cbook.cgi?ID=C2084186&Units=CAL&Mask=2000
2-Butanethiol, 3-methyl-
methyl
https://webbook.nist.gov/cgi/inchi/InChI%3D1S/C6H14S/c1-5(2)6(3%2C4)7/h5%2C7H%2C1-4H3
2-Butanethiol, 2,3-dimethyl-
dimethyl
https://webbook.nist.gov/cgi/inchi/InChI%3D1S/C5H12S/c1-4-5(2%2C3)6/h6H%2C4H2%2C1-3H3
2-Butanethiol, 2-methyl-
methyl
https://webbook.nist.gov/cgi/inchi/InChI%3D1S/C3H8S2/c1-5-3-2-4/h4H%2C2-3H2%2C1H3
3-Thia-1-butanethiol
thia
https://webbook.nist.gov/cgi/cbook.cgi?ID=C109795&Units=CAL&Mask=8
1-Butanethiol