6409-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6409-21-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,0 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 6409-21:
(6*6)+(5*4)+(4*0)+(3*9)+(2*2)+(1*1)=88
88 % 10 = 8
So 6409-21-8 is a valid CAS Registry Number.
InChI:InChI=1/C12H11NO8S2/c1-6(14)13-9-2-3-11(23(19,20)21)8-4-7(22(16,17)18)5-10(15)12(8)9/h2-5,15H,1H3,(H,13,14)(H,16,17,18)(H,19,20,21)
6409-21-8Relevant articles and documents
Polyazo compound and method for dyeing or textileprinting fiber material using the same
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, (2008/06/13)
A polyazo compound represented by the following formula (I): STR1 wherein A represents unsubstituted phenylene or naphthylene; PA1 E represents hydroxynaphthylene; PA1 m, m1 and m3 independently represent an integer of 0 or 1; PA1 B and B1 represents hydrogen atom, --SO2 -Z in which Z represents --CHCH2 or --CH2 CH2 Y in which Y represents a group eliminatable by an action of an alkali, or a substituted triazine group, etc.
