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890123-55-4

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890123-55-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 890123-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,0,1,2 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 890123-55:
(8*8)+(7*9)+(6*0)+(5*1)+(4*2)+(3*3)+(2*5)+(1*5)=164
164 % 10 = 4
So 890123-55-4 is a valid CAS Registry Number.

890123-55-4Relevant articles and documents

Synthesis of spiro[4.5]decane CF-ring analogues of 1α,25- dihydroxyvitamin D3

Schepens, Wim,Van Haver, Dirk,Vandewalle, Maurits,Bouillon, Roger,Verstuyf, Annemieke,De Clercq, Pierre J.

, p. 4247 - 4250 (2007/10/03)

(Chemical Equation Presented) A novel series of analogues of calcitriol (1) is developed featuring a spirocyclic central core resulting from C18/C21-connection and C15/ C16-deletion (2a, 2b). The synthesis of the key intermediate involves an Eschenmoser r

7-(2-CYCLOHEXYLIDENE-ETHYLIDENE)-SPIRO[5.5]UNDECANES USEFUL FOR MAKING PHARMACEUTICAL COMPOSITIONS

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Page/Page column 35, (2010/11/08)

The invention relates to novel analogues of the hormonally active metabolite of vitamin D3, and more specifically provides 7- (2-cyclohexylidene-ethylidene) -spiro [5.5] undecanes and methods for making them, as well as pharmaceutical compositions which c

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