7.1 Keys for Compound Identification

Aliphatic Hydrocarbon Compounds.

Code Identity
n Number of carbon atoms in the n-alkane molecule
I-15 Farnesane (isoprenoid with 15 carbon atoms)
I-16 Isoprenoid with 16 carbon atoms
Pr Pristane (isoprenoid with 19 carbon atoms)
Ph Phytane (isoprenoid with 20 carbon atoms)
I-8 2,5-(2,4)-Dimethylhexane
I-8' 2,3,4-Trimethylpentane
I-8" 2,3-Dimethylhexane
CH-n Alkylcyclohexane (where n indicates number of carbon atoms in the side chain)

Aromatic Hydrocarbon Compounds.

Code Identity
AB: c3-c6 Alkylbenzenes
NAPH: c0-c4 Naphthalenes
FL: c0-c4 Fluorenes
BP: c0-c2 Biphenyl/Dibenzofuran
PHEN: c0-c4 Phenanthrenes
PY: c0-c4 Pyrenes/Fluoranthenes
CHR: c0-c4 Chrysenes
BT: c1-c5 Benzothiophenes
DBT: c0-c4 Dibenzothiophenes
NBT: c0-c4 Naphthobenzothiophenes
MAS: Monoaromatic Steranes
TAS: Triaromatic Steranes

C4-Alkylbenzenes (m/z 134 mass chromatogram).

16 Sec-Butylbenzene
17 1-Methyl-3-Isopropylbenzene
18 1-Methyl-4-Isopropylbenzene
19 1-Methyl-2-Isopropylbenzene
20 1,3-Diethylbenzene
21 1-Methyl-3-Propylbenzene
22 Butylbenzene
23 1,3-Diemethyl-5-Ethylbenzene
24 1,2-Diethylbenzene
25 1-Methy-2-Propylbenzene
26 1,4-Dimethyl-2-Ethylbenzene
27 1,3-Dimethyl-4-Ethylbenzene
28 1,2-Dimethyl-4-Ethylbenzene
29 1,3-Dimethyl-2-Ethylbenzene
30 1,2-Dimethyl-3-Ethylbenzene
31a 1,2,4,5-Tetramethylbenzene
31 1,2,3,5-Tetramethylbenzene
32 1,2,3,4-Tetramethylbenzene

Terpanes (m/z 191 mass chromatograms).

Identity Carbon #
1 c21-Tricyclic Terpane 21
2 c22-Tricyclic Terpane 22
3 c23-Tricyclic Terpane 23
4 c24-Tricyclic Terpane 24
5 c25-Tricyclic Terpane 25
6 (a,b) c26-Tricyclic Terpane 26
7 c27-Tricyclic Terpane 27
A c28-Tricyclic Terpane # 1 28
B c28-Tricyclic Terpane #2 28
C c29-Tricyclic Terpane #1 29
D c29-Tricyclic Terpane #2 29
E 18a -22,29,30-Trisnorneohopane (Ts) 27
F 17a -22,29,30-Trisnorhopane (Tm) 27
I 17a -28,30-Bisnorhopane 28
K 17a ,21ß-30-Norhopane 29
L 17ß-21a -30-Normoretane 29
M 18a -Oleanane 30
N 17a ,21ß-Hopane 30
O 17ß,21a -Moretane 30
P 22S-17a ,21ß-30-Homohopane 31
Q 22R-17a ,21ß-30-Homohopane 31
T 22S-17a ,21ß-30,31-Bishomohopane 32
U 22R-17a ,21ß-30,31-Bishomohopane 32
WS 22S-17a ,21ß-30,31,32-Trishomohopane 33
WR 22R-17a ,21ß-30,31,32-Trishomohopane 33
XS 22S-17a ,21ß-30,31,32,33-Tetrahomohopane 34
XR 22R-17a ,21ß-30,31,32,33-Tetrahomohopane 34
YS 22S-17a ,21ß-30,31,32,33,34-Pentahomohopane 35
YR 22R-17a ,21ß-30,31,32,33,34-Pentahomohopane 35

Steranes (m/z 217 mass chromatogram).

Code Identity Carbon #
1 13ß,17a -diacholestane (20S) 27
2 13ß,17a -diacholestane (20R) 27
3 13a ,17ß-diacholestane (20S) 27
4 13a ,17ß-diacholestane (20R) 27
5 24-methyl-13ß,17a -diacholestane (20S) 28
6 24-methyl-13ß,17a -diacholestane (20R) 28
7D 5a ,24-methyl-13a ,17ß-diacholestane (20S) 28
7 14a ,17a -cholestane (20S) 27
8+8D 5a ,14ß,17ß-cholestane (20R) +
24-ethyl-13ß,17a -diacholestane(20S)
9 5a ,14ß,17ß-cholestane (20S) 27
9D 24-methyl-13a ,17ß-diacholestane (20R) 28
10 5a ,14a ,17a -cholestane (20R) 27 27
11 24-ethyl-13ß,17a -diacholestane (20R) 29
12 24-ethyl-13a ,17ß-diacholestane (20S) 29
13 24-methyl-14a ,17a -cholestane (20S) 28
14+14D 24-methyl-14ß,17ß-cholestane (20R) +
24-ethyl-13a ,17ß-diacholestane (20R)
15 24-methyl-14ß,17ß-cholestane (20S) 28
16 24-methyl-5a ,14a ,17a -cholestane (20R) 28
17 24-ethyl-14a -cholestane (20S) 29
18 24-ethyl-5a ,14ß,17ß-cholestane (20R) 29
19 24-ethyl-5a ,14ß,17ß-cholestane (20S) 29
20 24-ethyl-14a ,17a -cholestane (20R) 29

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