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18378-31-9

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18378-31-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18378-31-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,3,7 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 18378-31:
(7*1)+(6*8)+(5*3)+(4*7)+(3*8)+(2*3)+(1*1)=129
129 % 10 = 9
So 18378-31-9 is a valid CAS Registry Number.

18378-31-9Downstream Products

18378-31-9Relevant articles and documents

Derivatization of Amines with 4-Substituted 7-Nitrobenzofurazans

Heberer, H.,Kersting, H.,Matschiner, H.

, p. 487 - 504 (2007/10/02)

Electrophilic derivatives of 4-nitro-benzofurazan with different reactivities were used to synthesize 28 new mono- and disubstituted 4-amino-7-nitrobenzofurazans 2b, 2d, 2f-2i, 2l, 2m-2n, 3b-3f, 3h-3j, 4c-4d, 4f-4k, 4m, 4o-4p.A reaction mechanism is proposed on the basis of the differences of the reactivities and a preliminary kinetic examination.The acid character of the N-H-function in monosubstituted compounds is demonstrated by means of spectroscopical investigation of pKa-values.Data from i.r., u.v./vis, and fluorescence studies are offered.

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