104291-02-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104291-02-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,2,9 and 1 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 104291-02:
(8*1)+(7*0)+(6*4)+(5*2)+(4*9)+(3*1)+(2*0)+(1*2)=83
83 % 10 = 3
So 104291-02-3 is a valid CAS Registry Number.
104291-02-3Relevant academic research and scientific papers
RING OPENING AND RING ENLARGEMENT OF A CYCLOPROPENE CARBOXYLIC ACID
Schmitz, E.,Sonnenschein, H.,Kuban, R. J.
, p. 4911 - 4914 (2007/10/02)
3,3-Dimethyl-2-phenyl-cyclopropenecarboxylic acid 4 is prepared, starting with chlorophenyldiazirine 1.With acids 4 yields the open chain carboxylic acids 5, 6 and 7.Thionylchloride leads to the cyclobutenone 10, DCC to the acid anhydrides 11 and 13.
