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76543-12-9

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76543-12-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 76543-12-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,5,4 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 76543-12:
(7*7)+(6*6)+(5*5)+(4*4)+(3*3)+(2*1)+(1*2)=139
139 % 10 = 9
So 76543-12-9 is a valid CAS Registry Number.

76543-12-9Downstream Products

76543-12-9Relevant articles and documents

Acid-catalyzed formation of hexahomooxacalix[3]arenes

Miah, Mijan,Romanov, Nikolai N.,Cragg, Peter J.

, p. 3124 - 3126 (2002)

The role of acid catalysis in oxacalix[3]arene synthesis has been investigated. A range of acids were used to optimize the yield of tert-butyloxacalix[3]arene, the most efficient being p-toluenesulfonic acid, which, with local symmetry complementary with that of the lower rim of the calixarene, provides a templating effect.

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