217318-25-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 217318-25-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,3,1 and 8 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 217318-25:
(8*2)+(7*1)+(6*7)+(5*3)+(4*1)+(3*8)+(2*2)+(1*5)=117
117 % 10 = 7
So 217318-25-7 is a valid CAS Registry Number.
217318-25-7Relevant articles and documents
Method for dyeing dry hair
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, (2008/06/13)
The present invention relates to methods for dyeing keratinous fibers, without significantly damaging the hair. According to the method of the present invention the fibers are treated in a dry state by contacting said fibers with at least one oxidoreductase and at least one dye precursor. In this way it is possible to dye, e.g. human hair, in a simple and efficient manner.
