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87938-12-3

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87938-12-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87938-12-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,9,3 and 8 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 87938-12:
(7*8)+(6*7)+(5*9)+(4*3)+(3*8)+(2*1)+(1*2)=183
183 % 10 = 3
So 87938-12-3 is a valid CAS Registry Number.

87938-12-3Downstream Products

87938-12-3Relevant articles and documents

Carbene Reactions with Cis Azo Functions. Formation of Ester Azines from Δ3-1,3,4-Oxadiazolines

Keus, Diane,Kaminski, Maciej,Warkentin, John

, p. 343 - 347 (1984)

Thermolysis of a 2-alkoxy-2,5,5-trialkyl-Δ3-1,3,4-oxadiazoline (1), either neat or in a solvent such as benzene, leads to a carbonyl ylide intermediate which fragments to carbonyl compounds and carbenes.The latter attack the parent oxadiazoline at the azo function, presumably to form azomethine imine ylides.The latter ylides then fragment to form carbonyl compounds and azines such as R1(R2O)C=NN=C(OR2)R1, R1(R2O)C=NN=C(R3)2 and (R3)2C=NN=C(R3)2.The mechanism proposed is supported by results of studies of the dependence of the azine and propeneyields on the initial oxadiazoline concentration.More propene and less (R3)2C=NN=C(R3)2 are obtained at low oxadiazoline concentrations, as would be expected if both arise from dimethyl carbene.

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