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128017-04-9

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128017-04-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128017-04-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,0,1 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 128017-04:
(8*1)+(7*2)+(6*8)+(5*0)+(4*1)+(3*7)+(2*0)+(1*4)=99
99 % 10 = 9
So 128017-04-9 is a valid CAS Registry Number.

128017-04-9Relevant articles and documents

Reactions of N-Benzyl- and N-Benzylidene-alkanolamines with Bromine: Formation of 1,3-Oxazolidines, 1,3-Oxazinanes, 4,5-Dihydro-1,3-oxazoles and 5,6-Dihydro-4H-1,3-oxazines

Goosen, Andre,McCleland, Cedric W.,Sipamla, Allworth M.

, p. 2221 - 2232 (2007/10/03)

N-Methylbenzylamines react with bromine in acetonitrile to form N-benzylidenemethylamines.Under similar conditions 2-benzylaminoethanols and 3-benzylaminopropan-1-ols afford 3-benzyl-2-phenyl-1,3-oxazolidines and 3-benzyl-2-phenyl-1,3-oxazinanes, respectively. 2-Benzylidineaminoethanols and 3-benzylideneaminopropan-1-ols likewise give 2-aryl-4,5-dihydro-1,3-oxazoles and 2-aryl-5,6-dihydro-4H-1,3-oxazines, respectively.When N-benzylidenemethylamine is treated with bromine in the presence of alcohols, benzaldehyde acetals are obtained.

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