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881919-85-3

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881919-85-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 881919-85-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,1,9,1 and 9 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 881919-85:
(8*8)+(7*8)+(6*1)+(5*9)+(4*1)+(3*9)+(2*8)+(1*5)=223
223 % 10 = 3
So 881919-85-3 is a valid CAS Registry Number.

881919-85-3Relevant articles and documents

Synthesis of tetrahydropyran-4-ones and thiopyran-4-ones from donor-substituted α-bromostyrene derivatives

Rosiak, Anna,Frey, Wolfgang,Christoffers, Jens

, p. 4044 - 4054 (2006)

Tetrahydropyran-4-one and tetrahydrothiopyran-4-one derivatives with a 3-aryl substituent were synthesized by double-conjugate addition of water or H2S to divinyl ketones. These starting materials were prepared in two steps by conversion of lit

Novel 3-Oxa-10-Aza-Phenanthrenes

-

Page/Page column 15, (2010/11/28)

The compounds of formula I in which R1, R2 and R3 have the meanings as given in the description, are novel effective PDE4 inhibitors.

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