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141996-58-9

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141996-58-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 141996-58-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,9,9 and 6 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 141996-58:
(8*1)+(7*4)+(6*1)+(5*9)+(4*9)+(3*6)+(2*5)+(1*8)=159
159 % 10 = 9
So 141996-58-9 is a valid CAS Registry Number.

141996-58-9Downstream Products

141996-58-9Relevant articles and documents

ORGANOPHOSPHORUS CHEMISTRY 24. WITTIG REACTION OF β-AROYLACRYLIC- AND CINNAMIC ACIDS

Abdou, Wafaa M.,Ganoub, Neven A. F.,Mahran, Mohamed R.

, p. 79 - 86 (2007/10/02)

The Wittig reaction of β-aroylacrylic-(2b,c) and cinnamic (4b) acids has been investigated.Depending on the experimental conditions, reaction of 2b,c with alkylidene phosphoranes (1a,b) gives the respective complex ylides 3b-e and/or the dihydrofurans (7), whereas, with benzoylmethylenetriphenylphosphorane (1c), ylide 3f or 3g is only formed.On the other hand, the reaction of 4b with 1a,b proceeded only in ethylacetate, yielding the ylides 9, accompanied by the decarboxylation of the acid.However, compound 4b did not react with 1c, under the above experimental conditions.Structural assignments are based on analytical and spectroscopic results as well as possible reaction mechanisms are annotated. Key words: β-Aroylacrylic acids; cinnamic acid; Wittig reagents, C-alkylation, O-alkylation.

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