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87544-62-5

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87544-62-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87544-62-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,5,4 and 4 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 87544-62:
(7*8)+(6*7)+(5*5)+(4*4)+(3*4)+(2*6)+(1*2)=165
165 % 10 = 5
So 87544-62-5 is a valid CAS Registry Number.

87544-62-5Relevant articles and documents

SYNTHESIS OF SOME 3-AROYL-4-ARYL-2-PYRAZOLIONES

Reddy, Dandu Bhaskar,Seshamma, Tikkavarapu,Reddy, Batreddi Venkataramana

, p. 19 - 24 (2007/10/02)

Addition of diazomethane to α,β-unsaturated ketones in the presence of base at low temperature gave 3-aroyl-4-aryl-2-pyrazolines (IIa).Benoylation, benzenesulfonylation and nitrosation of IIa yielded the corresponding 1-substituted derivatives (V, VI and VII) IR and (1)H-NMR spectral data established the stuctures of the new compounds.

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