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81844-49-7

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81844-49-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81844-49-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,4 and 4 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81844-49:
(7*8)+(6*1)+(5*8)+(4*4)+(3*4)+(2*4)+(1*9)=147
147 % 10 = 7
So 81844-49-7 is a valid CAS Registry Number.

81844-49-7Downstream Products

81844-49-7Relevant articles and documents

Role of Metal Ions in Reactions of dl-Camphorquinone with Monoamines

Mukhedkar, V. A.,Rajgolkar, R. L.,Mukhedkar, A. J.

, p. 295 - 299 (2007/10/02)

The condensation of monoamines with dl-camphorquinone in the presence of metal ions (Co2+, Ni2+, Cu2+) gave two classes of metal complexes.The reactions leading to Class 1 complexes gave monoimines with the imino group at C(2) and C(3) positions.The reactions leading to Class II complexes gave monoimines with the imino group at C(3) position only, similar to that obtained by the direct condensation reaction in the absence of a metal ion.A diimine is also obtained in a reaction involving copper(II) complexes of Class I.

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