Table 5: Nonspecific Compounds Tentatively Identified in THM-Py-GC/MS Analysis of Amber Objects IUPAC Name CAS # Formula MW Retention Time (min) Methyltricyclo[2.2.1.0(2,6)]heptane 4601-85-8 C H 108 6.15 8 12 Cyclopentane, 2-ethylidene-1,1-dimethyl- 56324-66-4 C H 124 7.84 9 16 1,3,3-Trimethyl-2-(2-methyl-cyclopropyl)-cyclohexene 285129-06-8 C H 178 16.62 13 22 2-Buten-1-one, 1-(2,6,6-trimethyl-1-cyclohexen-1-yl)- 35044-68-9 C H O 192 19.73 13 20 1,5,9,9-Tetramethyl-2-methylene-spiro[3.5]non-5-ene N/A C H 190 19.82 14 22 Bicyclo[4.1.0]heptan-2-ol, 1beta-(3-methyl-1,3-butadienyl)-2alpha, 6beta-dimethyl-3beta-acetoxy- N/A C H O 264 21.49 16 24 3 2-Methyl-4-(2,6,6-trimethylcyclohex-1-enyl)but-2-en-1-ol 62924-17-8 C H O 208 21.70 14 24 8-Acetyl-5,5-dimethyl-nona-2,3,8-trienoic acid, methyl ester 68799-74-6 C H O 236 23.09 14 20 3 2-Methyl-4-(2,6,6-trimethylcyclohex-1-enyl)but-2-en-1-ol 62924-17-8 C H O 208 23.83 14 24 7a-Isopropenyl-4,5-dimethyloctahydroindene-4-carboxylic acid N/A C H O 236 24.56 15 24 2 2-[5-(2,2-Dimethyl-6-methylene-cyclohexyl)-3-methyl-pent-2-enyl]-[1,4]benzoquinone N/A C H O 312 25.17 21 28 2 Acetic acid, (1,2,3,4,5,6,7,8-octahydro-3,8,8-trimethylnaphth-2-yl)methyl ester 314773-27-8 C H O 250 25.83 16 26 2 Acetic acid, 3-(6,6-dimethyl-2-methylenecyclohex-3-enylidene)-1-methylbutyl ester N/A C H O 248 26.00 16 24 2 Table 6: THM-Py-GC/MS Results for Reference Samples Sample Supplier GCI Identifier Peak Area Percentages Succinate Diterpenes Fatty Acids Amber varnish Zecchi VARN0084 0 0 77 Copal resin JPGM 0 36 0 Pine resin GCI NRES0244 0 74 0 Sandarac resin Verfmolen ‘De Kat’ NRES0295 0 19 0 Amber oil JPGM 1 1 3 Dominican amber JPGM 0 14 1 Amber (Dominican?) JPGM NRES0095 2 1 0 Amber Kremer NRES0005 3 2 1 Yellow amber Verfmolen ‘De Kat’ NRES0296 3 2 1 Amber Zecchi 10 2 2 Baltic amber JPGM 12 12 0.4 Amber Zecchi NRES0305 14 4 1 Amber Kremer NRES0004 20 6 1 Amber Kremer NRES0171 20 4 1 280 TECHNICAL ESSAY