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244077-31-4

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244077-31-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 244077-31-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,4,0,7 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 244077-31:
(8*2)+(7*4)+(6*4)+(5*0)+(4*7)+(3*7)+(2*3)+(1*1)=124
124 % 10 = 4
So 244077-31-4 is a valid CAS Registry Number.

244077-31-4Downstream Products

244077-31-4Relevant articles and documents

Novel selective phosphodiesterase (PDE4) inhibitors. 4. Resolution, absolute configuration, and PDE4 inhibitory activity of cis-tetra- and cis-hexahydrophthalazinones

Van der Mey, Margaretha,Boss, Hildegard,Couwenberg, Dennis,Hatzelmann, Armin,Sterk, Geert J.,Goubitz, Kees,Schenk, Henk,Timmerman, Hendrik

, p. 2526 - 2533 (2007/10/03)

Recently, we reported that 4-catechol-substituted cis-(±)-4a,5,6,7,8,8a-hexa- and cis-(±)- 4a,5,8,8a-tetrahydro-2H-phthalazin-1-ones show potent inhibition of phosphodiesterase (PDE4) activity, while the corresponding trans racemic mixtures exhibit only w

Phthalazinones

-

, (2008/06/13)

PCT No. PCT/EP98/00124 Sec. 371 Date Jul. 14, 1999 Sec. 102(e) Date Jul. 14, 1999 PCT Filed Jan. 12, 1998 PCT Pub. No. WO98/31674 PCT Pub. Date Jul. 23, 1998Compounds of formula I wherein R1, R2, R3, R4 and R5 have the means set forth in the description are selective cyclic nucleotide phosphodiesterase (PDE) inhibitors (specifically of type 4), which are effective bronchial therapeutics.

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