874989-57-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 874989-57-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,4,9,8 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 874989-57:
(8*8)+(7*7)+(6*4)+(5*9)+(4*8)+(3*9)+(2*5)+(1*7)=258
258 % 10 = 8
So 874989-57-8 is a valid CAS Registry Number.
874989-57-8Relevant articles and documents
CATIONIC PYRAZOLONE DYES METHOD FOR PRODUCTION THEREOF AND COLOURING AGENTS FOR KERATIN FIBRES CONTAINING SAID COMPOUNDS
-
Page/Page column 18-19, (2008/06/13)
The invention relates to cationic pyrazolone dyes of general formula (I) and colouring agents for keratin fibres comprising said dyes.