Cas 704894-83-7,2H-Pyridazino[4,5-b]-1,4-oxazine-3,8(4H,7H)-dione, 4-[2-(3,4-dimethoxyphenyl)ethyl]-

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Check Digit Verification of cas no

The CAS Registry Mumber 704894-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,0,4,8,9 and 4 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 704894-83:
(8*7)+(7*0)+(6*4)+(5*8)+(4*9)+(3*4)+(2*8)+(1*3)=187
187 % 10 = 7
So 704894-83-7 is a valid CAS Registry Number.

704894-83-7Upstream product

645405-25-0 4-(3,4-dimethoxyphenethyl)-7-(tetrahydro-2H-pyran-2-yl)-2H-pyridazino[4,5-b][1,4]oxazine-3,8(4H,7H)-dione

704894-83-7Downstream Products

704894-90-6 7-benzyl-4-[2-(2-chloro-4,5-dimethoxyphenyl)ethyl]-4H,7H-pyridazino[4,5-b][1,4]oxazine-3,8-dione

704894-83-7Relevant academic research and scientific papers

An efficient synthesis of [1,4]pyridazinooxazine[3,4-a]tetrahydro isoquinolines

Cho, Su-Dong,Park, Yong-Dae,Kim, Jeum-Jong,Joo, Woo-Hong,Shiro, Motoo,Esser, Lothar,Falck,Ahn, Chuljin,Shin, Dong-Soo,Yoon, Yong-Jin

, p. 3763 - 3773 (2007/10/03)

A series of fused isoquinoline-pyridazinooxazine chimera were prepared in good overall yield from phenethylamide 1 and 4,5-dichloropyridazin-3-one 2 via Smiles rearrangement and Pictet-Spengler cyclization.

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