Cas 1234457-72-7,C11H15ClN2O2

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Check Digit Verification of cas no

The CAS Registry Mumber 1234457-72-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,4,4,5 and 7 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1234457-72:
(9*1)+(8*2)+(7*3)+(6*4)+(5*4)+(4*5)+(3*7)+(2*7)+(1*2)=147
147 % 10 = 7
So 1234457-72-7 is a valid CAS Registry Number.

1234457-72-7Upstream product

1234457-72-7Downstream Products

30085-34-8 N-(4-chlorophenyl)-N'-hydroxyurea

1234457-72-7Relevant articles and documents

Synthesis of substituted N-hydroxyureas via the in situ generation of t-butoxy isocyanate

Krause, Josef G.,Leskiw, Brian D.,Emery, Michelle L.,McGahan, Megan E.,McCourt, Mary P.,Priefer, Ronny

, p. 3568 - 3570 (2010)

Treatment of primary and secondary amines with tert- butylmesitylenesulfonoxycarbamate and a base afforded tert-butoxyurea, which when treated with an acid ultimately yielded substituted N-hydroxyureas. It is proposed that this proceeded via the generation of t-butoxy isocyanate in situ. This method allows for the synthesis of both mono and disubstituted N-hydroxyureas.

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CAS

1234457-72-7