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1204504-32-4

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1204504-32-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1204504-32-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,4,5,0 and 4 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1204504-32:
(9*1)+(8*2)+(7*0)+(6*4)+(5*5)+(4*0)+(3*4)+(2*3)+(1*2)=94
94 % 10 = 4
So 1204504-32-4 is a valid CAS Registry Number.

1204504-32-4Downstream Products

1204504-32-4Relevant articles and documents

Double-stranded supramolecular assembly through salt bridge formation between rigid and flexible amidine and carboxylic acid strands

Iida, Hiroki,Shimoyama, Munenori,Furusho, Yoshio,Yashima, Eiji

experimental part, p. 417 - 423 (2010/04/02)

(Chemical Equation Presented) A series of monomeric strands consisting of m-terphenyl backbones with chiral rigid C-linked (3) and flexible N-linked (5) formamidines and achiral carboxylic acid (4) and flexible carboxymethyl (6) residues were synthesized, and their duplex formations through amidinium-carboxylate salt bridges were investigated by NMR, circular dichroism (CD), and UV-visible spectroscopies. The salt bridge-derived duplex formation was largely dependent on the structures of the formamidine and carboxylic acid strands, and the C-linked formamidine strand 3 formed a more stable duplex with the complementary carboxylic acid strands (4 and 6) than did the flexibleN-linked formamidine strand 5. The single crystal X-ray analysis revealed that the duplex 5·4 has a skewed right-handed double helical structure. A complementary duplex dimer was also synthesized from the dimers of 5 and 4 joined by diacetylene linkers. Variable-temperature CD measurements indicated that the duplex possesses a dynamic double helical structure resulting from the flexible N-linked formamidine units.

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