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131786-03-3

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131786-03-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131786-03-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,7,8 and 6 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131786-03:
(8*1)+(7*3)+(6*1)+(5*7)+(4*8)+(3*6)+(2*0)+(1*3)=123
123 % 10 = 3
So 131786-03-3 is a valid CAS Registry Number.

131786-03-3Relevant articles and documents

X=Y-ZH compounds as potential 1,3-dipoles. Part 30. Cycloaddition of arylidene imines of α-amino esters to acetylenic dipolarophiles and pyrrole forming rearrangements

Grigg, Ronald,Gunaratne, H. Q. Nimal,Kemp, James

, p. 6467 - 6482 (2007/10/02)

Arylidene imines of α-amino esters undergo cycloaddition to ethyl phenylpropiolate, methyl propiolate and dimethyl acetylenedicarboxylate (ADE) on heating in toluene (110°C)or o-xylene (135- 145°C). The reactions proceed via stereospecific azomethine ylid

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