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1833-18-7

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1833-18-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1833-18-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,3 and 3 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1833-18:
(6*1)+(5*8)+(4*3)+(3*3)+(2*1)+(1*8)=77
77 % 10 = 7
So 1833-18-7 is a valid CAS Registry Number.

1833-18-7Relevant articles and documents

Reaction 5-(Arylmethylidene)-2,4,6-pyrimidine-2,4,6(1H,3H,5H)-triones with Arenecarbaldehyde Phenylhydrazones in the Presence of Sodium N-Chlorobenzenesulfonamide

Tyrkov,Yurtaeva,Rsaeva

, p. 269 - 272 (2019)

The reactions of 5-(arylmethylidene)-2,4,6-pyrimidine-2,4,6(1H,3H,5H)-triones with arenecarbaldehyde phenylhydrazones in the presence of sodium N-chlorobenzenesulfonamide give 2,3,7,9-tetraasaspiro-[4.5]dec-1-ene-6,8,10-triones in yields of 30–45%.

Copper(II)-catalyzed aerobic oxidative synthesis of substituted 1,2,3- and 1,2,4-triazoles from bisarylhydrazones via C-H functionalization/C-C/N-N/C-N bonds formation

Guru, Murali Mohan,Punniyamurthy, Tharmalingam

experimental part, p. 5063 - 5073 (2012/07/16)

An unprecedented copper(II)-catalyzed aerobic oxidative synthesis of 2,4,5-triaryl-1,2,3-triazoles and 1,3,5-triaryl-1,2,4-triazoles from bisarylhydrazones as the common starting precursor has been achieved via cascade C-H functionalization/C-C/N-N/C-N bonds formation under mild reaction conditions. One of the enthralling outcomes of this strategy is the copper(II)-catalyzed room temperature C-H functionalization/C-N bond formation in presence of air, which has been accomplished during the synthesis of substituted 1,2,4-triazoles. This new class of compounds could give prospective luminescence as an iconic component in the area of pharmaceutical and biological sciences. The intermediates for both the processes have been isolated to elucidate the mechanistic scenario.

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