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154503-72-7

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154503-72-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 154503-72-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,4,5,0 and 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 154503-72:
(8*1)+(7*5)+(6*4)+(5*5)+(4*0)+(3*3)+(2*7)+(1*2)=117
117 % 10 = 7
So 154503-72-7 is a valid CAS Registry Number.

154503-72-7Relevant articles and documents

Synthesis and spectroscopic properties of N,N-bridged dipyrrinones

Hwang, Ki-Oh,Lightner, David A.

, p. 1955 - 1966 (1991)

3,4-Dimethylpyrrole-2-aldehyde was converted into methano (1), ethano (2) and 1,3-propano N10,N11-bridged dipyrrinones. At room temperature in cyclohexane the large fluorescence quantum yield associated with 1 (φF=0.81) falls off significantly with increasing bridge length (2:φF = 0.26, 3: φF = 0.0012).

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