CAS 62-23-7

4-Nitrobenzoic acid4-nitrobenzoic acid

Codes: Tetracaine-001, CONI-013

Application context (from source-drug indications)

AnaesthesiaOxymetazoline Hydrochloride/Tetracaine HydrochloridePeriapical periodontitisOxymetazoline Hydrochloride/Tetracaine HydrochlorideDental cariesOxymetazoline Hydrochloride/Tetracaine HydrochlorideHyponatraemiaConivaptan HydrochlorideAcute decompensated heart failureConivaptan HydrochlorideHeart failureConivaptan HydrochlorideLiver diseaseConivaptan HydrochlorideTraumatic brain injuryConivaptan HydrochlorideKidney diseaseConivaptan HydrochlorideAnaesthesiaTetracaine HydrochlorideRetinitis pigmentosaTetracaine HydrochloridePainTetracaine Hydrochloride

Source drugs (routes using this intermediate)

Drug	Tier	Expiry
Oxymetazoline Hydrochloride/Tetracaine Hydrochloride	Tier C — Watch / trade	-
Conivaptan Hydrochloride	Tier C — Watch / trade	-
Tetracaine Hydrochloride	Tier C — Watch / trade	-

Position in synthesis routes (up/downstream chain)

Ordered by route registration; left → right is the synthesis direction. The highlighted node is the current CAS; others link to their own profiles.

Oxymetazoline Hydrochloride/Tetracaine HydrochlorideOptimised routesteps: 6total yield: /

4-Nitrobenzoic acid→4-Nitrobenzoyl chloride→N,N-Dimethylaminoethanol→2-(Dimethylamino)ethyl 4-nitrobenzoate hydrogen chloride→2-(Dimethylamino)ethyl 4-nitrobenzoate→2-(Dimethylamino)ethyl 4-aminobenzoate hydrogen chloride→4-Aminobenzoic acid 2-(dimethylamino)ethyl ester→Butanal→1-Bromobutane→4-(Butylamino)benzoic acid 2-(dimethylamino)ethyl ester

Conivaptan HydrochlorideOptimised routesteps: 6total yield: /

acetimidamide hydrochloride→1-tosyl-1,2,3,4-tetrahydro-5H-benzo[b]azepin-5-one→4-bromo-1-tosyl-1,2,3,4-tetrahydro-5H-benzo[b]azepin-5-one→2-methyl-6-tosyl-1,4,5,6-tetrahydrobenzo[b]imidazo[4,5-d]azepine→2-methyl-1,4,5,6-tetrahydrobenzo[b]imidazo[4,5-d]azepine→4-nitrobenzoic acid→(2-methyl-4,5-dihydrobenzo[b]imidazo[4,5-d]azepin-6(1H)-yl)(4-nitrophenyl)methanone→(4-aminophenyl)(2-methyl-4,5-dihydrobenzo[b]imidazo[4,5-d]azepin-6(1H)-yl)methanone→[1,1'-biphenyl]-2-carbonyl chloride

Tetracaine HydrochlorideOptimised routesteps: 6total yield: /

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