| | accosperse toluidine red XL |
| | atlasol spirit red 3 |
| | c.i. 12120 |
| | C.I. pigment red 3 |
| | carnelio helio red |
| | chromatex red J |
| | CI pigment red 3 |
| | D and C red no. 35 |
| | dainichi permanent red 4 R |
| | eljon fast scarlet M |
| | enialit light red RL |
| | fast red A (pigment) |
| | fast red AB |
| | fast red J |
| | fast red JE |
| | fast red R |
| | fastona red B |
| | fastona scarlet RL |
| | fastona scarlet YS |
| | hansa red B |
| | hansa red G |
| | hansa scarlet RB |
| | hansa scarlet RN |
| | helio fast red BN |
| | helio fast red RL |
| | helio red RL |
| | helio red toner |
| | hispalit fast scarlet M |
| | irgalite fast red P4R |
| | irgalite red PV2 |
| | irgalite red RNPX |
| | isol fast red HB |
| | isol fast red RNB |
| | isol toluidine red HB |
| | isol toluidine red MB |
| | isol toluidine red RNG |
| | kromon helio fast red |
| | lake red 4R |
| | lithol fast scarlet M |
| | lutetia fast red 3R |
| 1-((4- | methyl-2-nitrophenyl)azo)-2-naphthalenol |
| ((4- | methyl-2-nitrophenyl)azo)-2-naphthol |
| (1Z)-1-[(4- | methyl-2-nitrophenyl)hydrazinylidene]naphthalen-2-one |
| 1-(4- | methyl-2-nitrophenylazo)-2-naphthol |
| | monolite fast scarlet CA |
| | monolite fast scarlet RBA |
| | monolite fast scarlet RT |
| 2- | naphthalenol, 1-((4-methyl-2-nitrophenyl)azo)- |
| 1-((2- | nitro-4-methylphenyl)azo)-2-naphthol |
| 1-(o- | nitro-p-tolylazo)-2-naphthol |
| | oralith red P4R |
| | permanent red 4R |
| | pigment red 3 |
| | pigment red 3 (c.i. 12120) |
| | pigment red RL |
| | pigment scarlet B |
| | pigment scarlet N |
| | pigment scarlet R |
| | polymo red FGN |
| | recolite fast red RBL |
| | sanyo scarlet pure |
| | scarlet pigment M |
| | segnale light red B |
| | segnale light red BR |
| | siegle red 1 |
| | siegle red B |
| | siegle red BB |
| | silosol red RBN |
| | symuler fast scarlet 4R |
| | syton fast scarlet RB |
| | tertropigment red HAB |
| | toluidine red |
| | toluidine red (c.i. 12120) |
| | toluidine red 10451 |
| | toluidine red 3B |
| | toluidine red 4R |
| | toluidine red BFB |
| | toluidine red BFGG |
| | toluidine red light |
| | toluidine red R |
| | toluidine red toner |