353-07-1Relevant articles and documents
Stable Yellow Imidazolium Compounds
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Paragraph 0137; 0138; 0222; 0223; 0236; 0237, (2018/04/13)
Described herein is a yellow imidazolium chromophore having a structure according to Formula V.
Telescoping Synthesis of 5-Amino-4-Nitroso-1-Alkyl-1H-Pyrazole Salt
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Paragraph 0053-0055; 0062, (2013/08/28)
A telescoping synthesis of 5-amino-4-nitroso-1-alkyl-1H-pyrazole salt derivatives of formula (I), the compound (I) itself, and its use as an intermediate in the fabrication of 1-alkyl-4,5-diaminopyrazole salts of general formula (IX). The compounds of formula (IX) can be used as precursor dyes in oxidative hair dye compositions. R is a mono- or poly-substituted or unsubstituted, straight or branched, saturated or mono- or poly-unsaturated, alkyl group. HZ and HZ′ are organic or mineral acids.
1-Hexzl-1H-Pyrazole-4,5-Diamine Hemisulfate, and Its Use in Dyeing Compositions
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Paragraph 0025; 0032, (2013/08/28)
1-hexyl-1H-pyrazole-4,5-diamine hemisulfate, as represented in formula (IX-a), and its use in oxidative dyeing composition. This pyrazole salt was found to combine good stability as raw material and good shade intensity with a range of common couplers when formulated in hair dyeing composition.