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290348-16-2

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290348-16-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 290348-16-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,0,3,4 and 8 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 290348-16:
(8*2)+(7*9)+(6*0)+(5*3)+(4*4)+(3*8)+(2*1)+(1*6)=142
142 % 10 = 2
So 290348-16-2 is a valid CAS Registry Number.

290348-16-2Downstream Products

290348-16-2Relevant articles and documents

Syntheses of thiazole-containing macroheterocycles related to porphycene

Nussbaumer, Thomas,Neidlein, Richard

, p. 1161 - 1167 (2007/10/03)

The syntheses of 2,2'-bithiazole-containing and related expanded macrocycles 13-16 were accomplished by the McMurry coupling reaction of the corresponding [2,2'-bithiazole]-5,5'-dicarbaldehyde 6c and 2,2'-(1,4- phenylene)bis[thiazole-5-carbaldehyde] 7, readily available by a two-step reaction sequence. The success of the dimerization strongly depends on the steric repulsion of the substituents vicinal to the CHO group.

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