50670-19-4

Basic information

• Product Name: 4-Pyridinecarboxaldehyde, methylphenylhydrazone
• CAS NO: 50670-19-4
• Molecular Formula: C13H13N3
• Molecular Weight: 211.266
• Mol File: 50670-19-4.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: 4-Pyridinecarboxaldehyde, methylphenylhydrazone(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Pyridinecarboxaldehyde, methylphenylhydrazone(50670-19-4)
• EPA Substance Registry System: 4-Pyridinecarboxaldehyde, methylphenylhydrazone(50670-19-4)

Safety Data

• Hazardous Substances Data: 50670-19-4(Hazardous Substances Data)

Upstream product

• 872-85-5 pyridine-4-carbaldehyde 
• 618-40-6 1-Methyl-1-phenylhydrazine 

Downstream Products

• 960357-99-7 Br^(1-)*C₁₆H₁₉BrN₃⁽¹⁺⁾ 
• 1042977-77-4 Br^(1-)*C₁₉H₂₁N₄O₂S⁽¹⁺⁾ 
• 863638-68-0 compound [28] 

Relevant articles and documents

CATIONIC DYES

Disclosed are dyes of Formula (I) wherein D is the radical of anthraquinone, acridine, azo, azomethine, hydrazomethine, benzodifuranone, coumarine, diketopyrrolopyrrol, dioxaxine, diphenylmethane, formazane, indigoid, indophenol, naphtalimide, naphthaquinone, nitroaryl, merocyanine, methine, oxazine,perinone, perylene, pyrenequinone, phtalocyanine, phenazine, quinoneimine, quinacridone, quinophtalone, stilbene, styryl, triphenylmethane, xanthene, thiazine dye and thioxanthene dye; Q is C 1-C 30alkylene, -C 2-C 12alkenylene, C 5-C10arylene-, C 5-C 10cycloalkylene-or -C 1- C 10alkylene(C5-C10arylene)-which may be interrupted and/or terminated at one or both ends by one or more than one -O-, -S-, -N=, -N(R 1)-, SO2, -(CH 2CH 2-O) 1-5-, -(CH 2CH 2CH 2-O) 1-5-, -C(O)-, -C(O)-C1-C12alkenylene, -C(O)O-, -OCO-, AN+ R 1 R 2, -CON(R 1)-, -C(NR1R2) 2-, -(R1)NC(O)-, -CSR1-or an optionally substituted, saturated or unsaturated, fused or non-fused aromatic or nonaromatic (hetero)cyclic) bivalent radical optionally comprising at least one heteroatom; -O-; -S-; -N(R1)-; SO2; -(CH2CH2-O) 1-5-; -C(O)-; -C(O)-C1-C12alkenylene; -C(O)O-, -OCO-;B N+ R 1 R 2; -CON(R1)-; -C(NR1R 2) 2-; -(R1)NC(O)-; CSR1; saturated or unsaturated, fused or non-fused aromatic or nonaro- matic bivalent radical optionally comprising at least one heteroatom; which is optionally substituted by C1-C30alkyl, C1-C30alkoxy, -C2-C12alkenyl, C5-C10aryl, C5-C10cycloalkyl, C1- C10alkyl(C5-C10arylene), hydroxy or D+; R1and R2 independently from each other are hydrogen; or unsubstituted or substituted, straight-chain or branched, monocyclic or polycyclic, interrupted or uninterrupted C1- C14alkyl; C1-C14hydroxyalkyl; C1-C14 aminoalkyl; C2-C14alkenyl; C6-C10aryl; C6-C10aryl-C1- C10alkyl; or C 5-C 10alkyl(C5-C10aryl).

THIOL DYES

Disclosed are thiol dyes of formula (I), wherein R1, R2, R3, R4 and R5 independently from each other are hydrogen; unsubstituted or substituted, straight-chain or branched, monocyclic or polycyclic, interrupted or uninterrupted C1-C14alkyl; C2-C14alkenyl; C6-C10aryl; C6-C10aryl-C1-C10alkyl; or C5-C10alkyl(C5-C10aryl); A is a residue of an organic dye; and Y1 is the direct bond; C1C10alkylene; C5-C10cycloalkylene; C5-C12arylene; or C5-C12arylene- (C1-C10alkylene). The compounds are used to dye hair with or without reducing agents. Furthermore, the present invention relates to compositions comprising thiol dyes of formula (I) and to process for the preparation of theses compounds.

SULFIDE DYES

Formula (I) wherein R1 and R2 each independently from each other are a residue of an organic dye; Y1 and Y2 each independently from each other are unsubstituted or substituted, straightchain or branched, interrupted or uninterrupted -C1-C10alkylene-; -C5-C10cycloalkylene-; C5-C10arylene; or-C5-C10arylene-(C1-C10alkylene)-; Z1 and Z2 independently from each other are Formula (II) are each independently from each other hydrogen; or unsubstituted or substituted, straight-chain or branched, monocyclic or polycyclic, interrupted or uninterrupted C1-C14alkyl; C2-C14alkenyl; C6-C10aryl; C6-C10aryl-C1-C10alkyl; or C5-C10alkyl(C5-C10aryl); r, q and n independently from each other are 0 or 1, if n is 0, Z3 is hydrogen; and if n is 1, Z3 is -S-; with the proviso that the method does not comprise treating the fiber with an enzyme of the type of a protein disulfidisomerase (EC 5.3.4.1). Further, the present invention relates to novel disulfid compounds, compositions thereof, especially comprising other dyes, and to processes for their preparation.