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127280-69-7

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127280-69-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127280-69-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,2,8 and 0 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 127280-69:
(8*1)+(7*2)+(6*7)+(5*2)+(4*8)+(3*0)+(2*6)+(1*9)=127
127 % 10 = 7
So 127280-69-7 is a valid CAS Registry Number.

127280-69-7Downstream Products

127280-69-7Relevant articles and documents

A Sterically Hindered Bridgehead System: 1,3-Substituted 1,4,5,8,9,12-Hexamethyltriptycenes

Pakusch, Joachim,Ruechardt, Christoph

, p. 2147 - 2151 (2007/10/02)

The synthetic access to five 13-X-substituted 1,4,5,8,9,12-hexamethyltriptycenes (X=NO2, NC, NH2, NHCHO) is described.Due to steric hindrance of the bridgehead position by the methyl groups in position 1, 8 and 9 is was impossible neither to formylate nor acetylate the 13-amino compound 23, nor to dehydrate the 13-formamido compound 22 to the isocyanide 19 by standard methods.

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