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13750-34-0

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13750-34-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13750-34-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,7,5 and 0 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 13750-34:
(7*1)+(6*3)+(5*7)+(4*5)+(3*0)+(2*3)+(1*4)=90
90 % 10 = 0
So 13750-34-0 is a valid CAS Registry Number.

13750-34-0Relevant articles and documents

Synthesis and Reactivity of N',N'-Disubstituted N-arenesulfonamides

Himbert, Gerhard,Schwickerath, Willi

, p. 2105 - 2118 (2007/10/02)

The synthesis of the amidino azides 3a-k mentioned in the title can be performed by direct chloride/azide exchange of the correspondingly substituted chlorides 1 or by nitrosation of the corresponding hydrazine derivatives 2.The azides 3 show no tendency, to isomerize to the valence tautomeric 5-amino-1-(arylsulfonyl)tetrazoles 4. - The azides 3 react with triphenylphosphane under nitrogen evolution to give the iminophosphoranes 5, while with methylene-active compounds the corresponding diazo compounds and the guanidines 6 are formed.The amidino azides add smoothly to the ynamines 7 to furnish the triazoles 8 which, depending on the substituents, isomerize partly or completely to yield the diazoamidines 9.

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