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81829-63-2

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81829-63-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81829-63-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,2 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81829-63:
(7*8)+(6*1)+(5*8)+(4*2)+(3*9)+(2*6)+(1*3)=152
152 % 10 = 2
So 81829-63-2 is a valid CAS Registry Number.

81829-63-2Downstream Products

81829-63-2Relevant articles and documents

Synthesis of novel 2-aryloxy-3-(4-chlorophenyl)-8-substituted-5-aryl-8,9-dihydro-3H-chromeno[2,3-d]pyrimidine-4,6(5H,7H)-dione derivatives

Wang, Zhong-Xia,Chen, Li-Zhuang,Wang, Fang-Ming,Li, Bei,Han, Guang-Fan

, p. 744 - 750 (2015)

Twenty-one novel 2-aryloxy-3-(4-chlorophenyl)-8-substituted-5-aryl-8,9-dihydro-3H-chromeno[2,3-d]pyrimidine-4,6(5H,7H)-diones 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i, 5j, 5k, 5l, 5m, 5n, 5o, 5p, 5q, 5r, 5s, 5t, 5u were designed and easily synthesized via a tan

CYCLIZATION REACTIONS OF NITRILES. REACTION OF ARYLIDENEMALONONITRILES WITH 1,3-DICARBONYL COMPOUNDS

Sharanin, Yu. A.,Promonenkov, V. K.,Sharanina, L. G.

, p. 544 - 548 (2007/10/02)

The reaction of 1,3-dicarbonyl compounds with arylidene derivatives of malononitrile and ethyl cyanoacetate leads to the formation of substituted 2-amino-4H-pyrans.In the case of 1,1,1-trifluoro-3-(2-thenoyl)acetone acid cleavage of the Michael adduct occurs, and this leads to 2-aryl-3-(2-thenoyl)-1,1-dicyanopropanes. 1,3-Indanedione reacts by exchange of the methylene components and gives the corresponding 2-arylidene-1,3-indanediones.

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