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17571-17-4

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17571-17-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17571-17-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,5,7 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 17571-17:
(7*1)+(6*7)+(5*5)+(4*7)+(3*1)+(2*1)+(1*7)=114
114 % 10 = 4
So 17571-17-4 is a valid CAS Registry Number.

17571-17-4Relevant articles and documents

Unusual pathway of the reaction of 4-benzoyl-5-phenylfuran-2,3-dione with acetylmethylenetriphenylphosphorane and methyl triphenylphosphoranylideneacetate

Koz'minykh,Goncharov,Aitken,Koz'minykh

, p. 1226 - 1231 (2006)

4-Benzoyl-5-phenylfuran-2,3-dione reacts with acetylmethylenetriphenylphosphorane or methyl triphenylphosphoranylideneacetate to form 1:1 adducts of 4-benzoyl-2-hydroxy-2-(2-oxopropyl)-5-phenyl-furan-3(2H)- one or methyl 4-benzoyl-2-hydroxy-3-oxo-5-phenyl-2,3-dihydrofuran-2-ylacetate, respectively, with triphenylphosphine oxide. Structural features of the products are discussed. Nauka/Interperiodica 2006.

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