Tables Table 1: Marker Compounds from THM-Py-GC/MS Analysis of Amber IUPAC Name Synonym CAS # Formula MW Retention Time (min) Bicyclo[2.2.1]heptane, 2,2-dimethyl-3-methylene- Camphene 79-92-5 C10H16 136 8.04 Butanedioic acid, dimethyl ester Succinic acid, dimethyl ester 106-65-0 C H O 146 10.27 6 10 4 Bicyclo[2.2.1]heptane, 2-methoxy-1,3,3-trimethyl- Methyl fenchyl ether N/A C H O 168 12.35 11 20 Bicyclo[2.2.1]heptan-2-ol, 1,3,3-trimethyl- Fenchyl alcohol 1632-73-1 C H O 154 12.50 10 18 Bicyclo[2.2.1]heptan-2-one, 1,7,7-trimethyl-, (1S)- L-camphor 464-48-2 C H O 152 13.20 10 16 Bicyclo[2.2.1]heptan-2-methoxy, 1,7,7-trimethyl-, (1S-endo)- Methyl bornyl ether N/A C H O 168 13.48 11 20 Bicyclo[2.2.1]heptan-2-ol, 1,7,7-trimethyl-, (1S-endo)- L-borneol 464-45-9 C H O 154 13.83 10 18 Naphthalene, 1,2,3,4-tetrahydro-1,8-dimethyl- 25419-33-4 C12H16 160 17.44 Cedren-13-methoxy, 8- N/A C H O 234 24.80 16 26 Methyl fenchyl succinate N/A C H O 268 25.16 15 24 4 Methyl bornyl succinate N/A C H O 268 26.54 15 24 4 Cedren-13-ol, 8- 18319-35-2 C15H24O 220 26.92 Dibornyl succinate N/A C H O 390 38.64 24 38 4 Table 2: Diterpenes Identified in Amber Objects Using THM-Py-GC/MS Analysis IUPAC Name Synonym CAS # Formula MW Retention Time (min) Podocarp-8-en-15-oic acid, 13alpha-methyl-13-vinyl-, methyl ester Methyl pimara-8,15-dien-18-oate 19907-21-2 C H O 316 33.17 21 32 2 Podocarpa-8,11,13-trien-15-oic acid, 13-isopropyl-, methyl ester Methyl dehydroabietate 1235-74-1 C H O 314 35.14 21 30 2 Methyl 5-(5,5,8a- Labd-8(20)-en-15-oic acid, methyl 13008-80-5 C H O 320 33.49 21 36 2 trimethyl-2-methylenedecahydro-1-naphthalenyl)-3-methylpentanoate ester Methyl pimar-7-en-18-oate 72088-13-2 C H O 318 33.80 21 34 2 Labda-8(20),12,14-trien-19-oic acid, methyl ester, (Z)- Methyl cis-Communate 10178-35-5 C H O 316 33.95 21 32 2 Podocarp-8(14)-en-15-oic acid, 13á-methyl-13-vinyl-, methyl ester Methyl sandaracopimarate 1686-54-0 C H O 316 33.95 21 32 2 Podocarp-7-en-15-oic acid, 13á-methyl-13-vinyl-, methyl ester Methyl isopimarate 1686-62-0 C H O 316 34.61 21 32 2 Podocarpa-7,13-dien-15-oic acid, 13-isopropyl-, methyl ester Methyl abietate 127-25-3 C H O 316 35.84 21 32 2 Podocarpa-6,8,11,13-tetraen-15-oic acid, 13-isopropyl-, methyl ester Methyl 18492-76-7 C H O 312 36.43 21 28 2 6-dehydrodehydroabietate 278 TECHNICAL ESSAY