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157228-09-6

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157228-09-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157228-09-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,2,2 and 8 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 157228-09:
(8*1)+(7*5)+(6*7)+(5*2)+(4*2)+(3*8)+(2*0)+(1*9)=136
136 % 10 = 6
So 157228-09-6 is a valid CAS Registry Number.

157228-09-6Relevant articles and documents

Conformational analysis by the ring current method. The structure of 2,2,13,13-tetramethyl[4.4]metacyclophane

Fukazawa, Yoshimasa,Usui, Shuji,Tanimoto, Koji,Hirai, Yoshimasa

, p. 8169 - 8175 (2007/10/02)

The conformational analysis of 2,2,13,13-tetramethyl[4.4]metacyclophane (4) using X-ray crystallographic analysis, molecular mechanics calculations, and the ring current method is presented. Compound 4 shows a characteristic temperature-dependent chemical

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