| 4-FORMYL-1-METHYLQUINOLINIUM-P-TOLUENESULFONATE | 223398-02-5 | HAIR DYEING | — |
| 4-FORMYL-2-METHOXYPHENYL ISOBUTYRATE | 20665-85-4 | PERFUMING | — |
| 4-FORMYL-2-METHOXYPHENYL ISOBUTYRATE | 20665-85-4 | PERFUMING | — |
| 4-FURANYLETHYL RESORCINOL | 1206193-05-6 | ANTIOXIDANTSKIN CONDITIONING | III/22 |
| 4-HYDROXYBENZOIC ACID | 99-96-7 | PRESERVATIVE | V/12 |
| 4-HYDROXYBENZOIC ACID | 99-96-7 | PRESERVATIVE | V/12 |
| 4-HYDROXYBUTYL ACRYLATE | 2478-10-6 | BINDING | — |
| 4-HYDROXYPROPYLAMINO-3-NITROPHENOL | 92952-81-3 | HAIR DYEING | III/205 |
| 4-HYDROXYPROPYLAMINO-3-NITROPHENOL | 92952-81-3 | HAIR DYEING | III/205 |
| 4-ISOBUTYLRESORCINOL | 18979-62-9 | ANTIOXIDANT | — |
| 4-ISOBUTYLRESORCINOL | 18979-62-9 | ANTIOXIDANT | — |
| 4-METHYL-1-OXASPIRO-4-UNDECANOL | 57094-40-3 | PERFUMING | — |
| 4-METHYL-1-OXASPIRO-4-UNDECANOL | 57094-40-3 | PERFUMING | — |
| 4-METHYL-1-OXASPIROUNDECENE | 68228-06-8 | PERFUMING | — |
| 4-METHYL-1-OXASPIROUNDECENE | 68228-06-8 | PERFUMING | — |
| 4-METHYL-1-PHENYL-2-PENTANOL | 7779-78-4 | PERFUMING | — |
| 4-METHYL-1-PHENYL-2-PENTANOL | 7779-78-4 | PERFUMING | — |
| 4-METHYL-2-PHENYL-2-PENTENAL | 26643-91-4 | PERFUMING | — |
| 4-METHYL-2-PHENYL-2-PENTENAL | 26643-91-4 | PERFUMING | — |
| 4-METHYL-2-PHENYLETHYL-1,3-DIOXOLANE | 67634-23-5 | PERFUMING | — |
| 4-METHYL-2-PHENYLETHYL-1,3-DIOXOLANE | 67634-23-5 | PERFUMING | — |
| 4-METHYL-3-DECEN-5-OL | 81782-77-6 | PERFUMING | — |
| 4-METHYL-3-DECEN-5-OL | 81782-77-6 | PERFUMING | — |
| 4-METHYL-4-PHENYL-2-PENTANONE | 7403-42-1 | PERFUMING | — |
| 4-METHYL-4-PHENYL-2-PENTANONE | 7403-42-1 | PERFUMING | — |
| 4-METHYL-7-GERANYLOXYCOUMARIN | 50542-90-0 | PERFUMING | — |
| 4-METHYL-7-GERANYLOXYCOUMARIN | 50542-90-0 | PERFUMING | — |
| 4-METHYLBENZALDEHYDE | 104-87-0 | MASKING | — |
| 4-METHYLBENZALDEHYDE | 104-87-0 | MASKING | — |
| 4-METHYLBENZYL 4,5-DIAMINO PYRAZOLE SULFATE | 173994-77-9 | HAIR DYEING | — |
| 4-METHYLBENZYL 4,5-DIAMINO PYRAZOLE SULFATE | 173994-77-9 | HAIR DYEING | — |
| 4-METHYLBENZYLIDENE CAMPHOR | 36861-47-9 / 38102-62-4 | UV ABSORBERUV FILTER | VI/18 |
| 4-METHYLBENZYLIDENE CAMPHOR | 36861-47-9 / 38102-62-4 | UV ABSORBERUV FILTER | VI/18 |
| 4-METHYLEN-2,6-EPOXYDECANE | 24237-02-3 | PERFUMING | — |
| 4-METHYLEN-2,6-EPOXYDECANE | 24237-02-3 | PERFUMING | — |
| 4-METHYLPENT-3-EN-2-ONE | 141-79-7 | PERFUMING | — |
| 4-METHYLPENT-3-EN-2-ONE | 141-79-7 | PERFUMING | — |
| 4-METHYLPENTAN-2-OL | 108-11-2 | PERFUMING | — |
| 4-METHYLPENTAN-2-OL | 108-11-2 | PERFUMING | — |
| 4-METHYLPENTANE-2,3-DIONE | 7493-58-5 | PERFUMING | — |
| 4-METHYLPENTANE-2,3-DIONE | 7493-58-5 | PERFUMING | — |
| 4-METHYLQUINOLINE | 491-35-0 | PERFUMING | — |
| 4-METHYLQUINOLINE | 491-35-0 | PERFUMING | — |
| 4-METHYLVINYLCYCLOHEXENE-1-METHYL ACETATE | 15111-96-3 | PERFUMING | — |
| 4-METHYLVINYLCYCLOHEXENE-1-METHYL ACETATE | 15111-96-3 | PERFUMING | — |
| 4-NITRO-O-PHENYLENEDIAMINE | 99-56-9 | HAIR DYEING | Annex III/I/265 - Directive 2012/21/EU |
| 4-NITRO-O-PHENYLENEDIAMINE | 99-56-9 | HAIR DYEING | Annex III/I/265 - Directive 2012/21/EU |
| 4-NITRO-O-PHENYLENEDIAMINE DIHYDROCHLORIDE | 6219-77-8 | HAIR DYEING | — |
| 4-NITRO-O-PHENYLENEDIAMINE DIHYDROCHLORIDE | 6219-77-8 | HAIR DYEING | — |
| 4-NITRO-O-PHENYLENEDIAMINE HCL | 6219-77-8 | HAIR DYEING | — |