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215797-78-7

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215797-78-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 215797-78-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,5,7,9 and 7 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 215797-78:
(8*2)+(7*1)+(6*5)+(5*7)+(4*9)+(3*7)+(2*7)+(1*8)=167
167 % 10 = 7
So 215797-78-7 is a valid CAS Registry Number.

215797-78-7Downstream Products

215797-78-7Relevant articles and documents

Formation of Betaines from Triphenyl(phenylethynyl)-phosphonium Bromide and Dialkyl Phosphonates or Trialkyl Phosphites

Khachatryan,Zalinyan,Pogosyan,Ovakimyan,Indzhikyan

, p. 361 - 363 (2007/10/03)

Reactions of triphenyl(phenylethynyl)phosphonium bromide with dialkyl phosphonates and trialkyl phosphites yield betaines with a negative charge on the oxygen and positive phosphonium center. The betaine derived from dimethyl phosphonate is decomposed by boiling water into triphenylphosphine oxide and 2-methoxy-1-phenylvinylphosphinic acid. A reaction scheme is proposed, which includes nucleophilic substitution followed by redox process.

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