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77756-23-1

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77756-23-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77756-23-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,7,5 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77756-23:
(7*7)+(6*7)+(5*7)+(4*5)+(3*6)+(2*2)+(1*3)=171
171 % 10 = 1
So 77756-23-1 is a valid CAS Registry Number.

77756-23-1Downstream Products

77756-23-1Relevant articles and documents

Oxidative cyclisation of 3,4-dibenzyltetrahydrofurans using ruthenium tetra(trifluoroacetate)

Ward, Robert S,Hughes, David D

, p. 2057 - 2064 (2007/10/03)

A series of trans-3,4-dibenzyltetrahydrofurans has been synthesised and subjected to oxidative cyclisation using ruthenium tetra(trifluoroacetate), affording dibenzocyclooctadiene lignans belonging to the isostegane series, in high yields. Since no evidence was found for the formation of the corresponding stegane isomers it is assumed that the reactions proceed with complete diastereoselectivity.

2,3-Bis-hydroxybenzyl-derivatives

-

, (2008/06/13)

The invention relates to compounds of the formula: STR1 in which R1 and R2 are the same or different groups selected from hydrogen or acyl or R1 and R2 together may represent an acetal group, and X and Y are the

SYNTHESIS OF COMPOUND X, A NON-STEROIDAL CONSTITUENT OF FEMALE URINE, AND CONGENERS

Groen, M.B.,Leemhuis, J.

, p. 5043 - 5046 (2007/10/02)

The synthesis of trans-(+/-)- and (-)-3,4-bisdihydro-2-(3H)-furanone (1), a recently discovered constituent of female urine, and some related compounds of biological interest is described.

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