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190375-45-2

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190375-45-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 190375-45-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,3,7 and 5 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 190375-45:
(8*1)+(7*9)+(6*0)+(5*3)+(4*7)+(3*5)+(2*4)+(1*5)=142
142 % 10 = 2
So 190375-45-2 is a valid CAS Registry Number.

190375-45-2Upstream product

190375-45-2Downstream Products

190375-45-2Relevant articles and documents

Chemical transformation of tetraacetal tetraoxa-cages to aza-cages and amido-cages mediated by iodotrimethylsilane and the combination of chlorotrimethylsilane and sodium iodide in nitriles

Chern, Jyh-Haur,Wu, Hsien-Jen

, p. 5967 - 5982 (1998)

An one-pot conversion of tetraacetal tetraoxa-cages 1a-e to aza-cages 2a-e mediated by iodotrimethylsilane in alkyl nitriles at 25 °C via the ring expansion compound 9 as the reaction intermediate was discovered. A Ritter- type reaction was proposed for the mechanism of this conversion. On the other hand, reaction of tetraacetal tetraoxa-cages 1 with Me3SiCl and NaI in nitriles at 25 °C gave the amido-cages 12. Conjugated nitriles and Lewis acids, such as TiCl4 or BF3-OEt2 were found to be ineffective for the conversion of oxa-cages to aza-cages. The structures of 2a and chemical transformation product 16 were proven by X-ray analysis.

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