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disodium 4-[[2,4-dihydroxy-3,5-bis(phenylazo)phenyl]azo]-5-hydroxynaphthalene-2,7-disulphonate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

97404-05-2

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97404-05-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97404-05-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,4,0 and 4 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 97404-05:
(7*9)+(6*7)+(5*4)+(4*0)+(3*4)+(2*0)+(1*5)=142
142 % 10 = 2
So 97404-05-2 is a valid CAS Registry Number.
InChI:InChI=1/C28H20N6O9S2.2Na/c35-24-14-20(45(41,42)43)12-16-11-19(44(38,39)40)13-21(25(16)24)31-33-23-15-22(32-29-17-7-3-1-4-8-17)27(36)26(28(23)37)34-30-18-9-5-2-6-10-18;;/h1-15,29-30,35H,(H,38,39,40)(H,41,42,43);;/q;2*+1/p-2/b32-22-,33-31+,34-26-;;

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