| Acetal | Acetal (natural) | Natural Advantage | 2002 | |
| Acetaldehyde ex orange | Acetaldehyde (natural) | Natural Advantage | 2003 | 75-07-0 |
| Acetaldehyde | Acetaldehyde (natural) | Natural Advantage | 2003 | 75-07-0 |
| Acetophenone | Acetophenone | Natural Advantage | 2009 | 98-86-2 |
| 4-Acetoxy-2,5-dimethyl-3(2H)furanone (natural) | 4-Acetoxy-2,5-dimethyl-3(2H)furanone (natural) | Natural Advantage | 3797 | |
| Acetyl propionyl | Acetyl propionyl | Natural Advantage | 2841 | 600-14-6 |
| Ammonium chloride | Ammonium chloride | Natural Advantage | 4494 | 12125-02-9 |
| Ammonium isovalerate | Ammonium isovalerate | Natural Advantage | 2054 | 7563-33-9 |
| Ammonium sulfide | Ammonium sulfide (natural) | Natural Advantage | 2053 | |
| Anisic acid | 4-Anisic acid (natural) | Natural Advantage | 3945 | 100-09-4 |
| Anisyl acetate | Anisyl acetate (natural) | Natural Advantage | 2098 | 104-21-2 |
| Anisyl acetone (natural) | 4-(p-Methoxyphenyl)-2-butanone (natural) | Natural Advantage | 2672 | 104-20-1 |
| Anisyl alcohol | Anisyl alcohol (natural) | Natural Advantage | 2099 | 105-13-5 |
| Anisyl formate | Anisyl formate (natural) | Natural Advantage | 2101 | 122-91-8 |
| Bacon Dithiazine | 2,4,6-Triisobutyl-5,6-dihydro-4H-1,3,5-dithiazine (natural) | Natural Advantage | 4017 | 74595-94-1 |
| Benzyl mercaptan | Benzyl mercaptan (natural) | Natural Advantage | 2147 | |
| l-Borneol (natural) | Borneol | Natural Advantage | 2157 | 507-70-0 |
| l-Borneol (natural) | l-Borneol (natural) | Natural Advantage | | 464-45-9 |
| Buchu ketone | p-Mentha-8-thiol-3-one | Natural Advantage | 3177 | 38462-22-5 |
| 1-Butanethiol (natural) | 1-Butanethiol | Natural Advantage | 3478 | 109-79-5 |
| 4-Butyroxy-2,5-dimethyl-3(2H)-furanone | 2,5-Dimethyl-3-oxo-(2H)-fur-4-yl butrate (natural) | Natural Advantage | 3970 | |
| beta-Caryophyllene | beta-Caryophyllene (natural) | Natural Advantage | 2252 | 87-44-5 |
| Chocolate thiazole | 2-Ethyl-4-methylthiazole (natural) | Natural Advantage | 3680 | 15679-12-6 |
| Cinnamic acid | Cinnamic acid (natural) | Natural Advantage | 2288 | 621-82-9 |
| Citral (natural) | Citral | Natural Advantage | 2303 | 5392-40-5 |
| Citronellyl acetate | Citronellyl acetate (natural) | Natural Advantage | 2311 | 150-84-5 |
| Cocoal FCC | 5-Methyl-2-phenyl-2-hexenal (natural) | Natural Advantage | 3199 | 21834-92-4 |
| Creosol | 2-Methoxy-4-methylphenol (natural) | Natural Advantage | 2671 | 93-51-6 |
| p-Cresol | p-Cresol (natural) | Natural Advantage | 2337 | 106-44-5 |
| p-Cymene | p-Cymene | Natural Advantage | 2356 | 99-87-6 |
