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1331753-47-9

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1331753-47-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1331753-47-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,1,7,5 and 3 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1331753-47:
(9*1)+(8*3)+(7*3)+(6*1)+(5*7)+(4*5)+(3*3)+(2*4)+(1*7)=139
139 % 10 = 9
So 1331753-47-9 is a valid CAS Registry Number.

1331753-47-9Relevant articles and documents

Concise palladium-catalyzed synthesis of dibenzodiazepines and structural analogues

Tsvelikhovsky, Dmitry,Buchwald, Stephen L.

supporting information; experimental part, p. 14228 - 14231 (2011/10/31)

A general and highly efficient protocol for the synthesis of dibenzodiazepines and their structural analogues is reported. In the presence of catalytic quantities of palladium, readily accessible precursors are cross-coupled with ammonia and then spontaneously undergo an intramolecular condensation to form the corresponding dibenzodiazepines in one step. This new strategy is applicable to the construction of a wide variety of dibenzooxazepines and other structurally related heterocycles.

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