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1257406-54-4

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1257406-54-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257406-54-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,4,0 and 6 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1257406-54:
(9*1)+(8*2)+(7*5)+(6*7)+(5*4)+(4*0)+(3*6)+(2*5)+(1*4)=154
154 % 10 = 4
So 1257406-54-4 is a valid CAS Registry Number.

1257406-54-4Downstream Products

1257406-54-4Relevant articles and documents

AZOMETHINE DIRECT DYES OR REDUCED PRECURSORS OF THESE DYES OBTAINED FROM SECONDARY, N-ALKYLAMINATED PARA-PHENYLENEDIAMINES, METHOD OF HAIR DYEING USING THESE DYES

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Page/Page column 26, (2010/12/29)

The invention relates to the dyeing of keratin fibres using azomethine direct dyes or reduced precursors of azomethine direct dyes obtained from secondary, N-alkylaminated para-phenylenediamines. The subject of the present application is direct dyes derived from 2-[{2-[(4-aminophenyl) amino] ethyl}(2-hydroxyethyl) amino]ethanol, a dye composition comprising the direct dyes, a method for dyeing keratin fibres using the direct dyes and the use of these dyes for dyeing keratin fibres. This composition makes it possible to obtain a particularly stable and persistent colouring.

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