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1257251-74-3

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1257251-74-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257251-74-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,2,5 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1257251-74:
(9*1)+(8*2)+(7*5)+(6*7)+(5*2)+(4*5)+(3*1)+(2*7)+(1*4)=153
153 % 10 = 3
So 1257251-74-3 is a valid CAS Registry Number.

1257251-74-3Downstream Products

1257251-74-3Relevant articles and documents

FLUORENE DERIVATIVE, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE

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Page/Page column 110-111, (2010/12/26)

An object is to provide a light-emitting element having high light-emission efficiency by provision of a novel fluorene derivative as represented by General Formula (G1) below. In the formula, R1 to R8 independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group. Further, α1 to α4 independently represent any of a substituted or unsubstituted arylene group having 6 to 12 carbon atoms. Furthermore, Ar1 and Ar2 independently represent any of an aryl group having 6 to 13 carbon atoms in a ring and Ar3 represents an alkyl group having 1 to 6 carbon atoms or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms. J, k, m, and n each independently represent 0 or 1.

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