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87243-45-6

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87243-45-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87243-45-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,2,4 and 3 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 87243-45:
(7*8)+(6*7)+(5*2)+(4*4)+(3*3)+(2*4)+(1*5)=146
146 % 10 = 6
So 87243-45-6 is a valid CAS Registry Number.

87243-45-6Relevant articles and documents

Torp-Ziegler cyclization in the synthesis of 3-amino-4-cyanopyrrole derivatives

Ryndina,Kadushkin,Solov'eva,Granik

, p. 1409 - 1420 (2007/10/03)

Polyfunctional derivatives of 3-aminopyrrole have been synthesized from several substituted β-enamino nitriles using Torp-Ziegler cyclization. These compounds are starting materials for further conversions, particularly for the synthesis of pyrrolo[3,2-d]

ACETALS OF LACTAMS AND ACID AMIDES. 40. SYNTHESIS AND HYDROLYTIC CLEAVAGE OF ONE-RING AND TWO-RING DERIVATIVES OF 4-PYRIMIDINONE

Granik, V. G.,Grizik, S. I.,Kiselev, S. S.,Chistyakov, V. V.,Anisimova, O. S.,Solov'eva, N. P.

, p. 434 - 439 (2007/10/02)

The reaction of 1-benzyl-5-cyano-6-dimethylaminomethylene-1,6-dihydro-4-pyrimidinone with acid leads to 5-benzyl-1,2,7,8-tetrahydropyridopyrimidine-1,8-dione, whereas the reaction with ammonia leads to a mixture of 3-cyano-4-benzylamino-2-pyridone

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