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112043-37-5

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112043-37-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 112043-37-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,2,0,4 and 3 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 112043-37:
(8*1)+(7*1)+(6*2)+(5*0)+(4*4)+(3*3)+(2*3)+(1*7)=65
65 % 10 = 5
So 112043-37-5 is a valid CAS Registry Number.

112043-37-5Relevant articles and documents

Intramolecular Cycloadditions to Oxyallyl Zwitterions Generated from Photorearrangements of 2,5-Cyclohexadien-1-ones

Schultz, Arthur G.,Macielag, Mark,Plummer, Mark

, p. 391 - 395 (1988)

Photorearrangement of 2,5-cyclohexadien-1-one 9a gave phenols 12 and 13, while 9b gave bicyclohexenone 10b.No evidence for the formation of an azide-zwitterion cycloadduct was obtained from these examples.However, the 3,6-dimethoxy analogue 9c provided the bridged triazene 14, for which X-ray crystallographic studies confirmed structural assignments for 14 and previously obtained triazenes 5a and 5b. 4--3-methoxy-4-(nethoxycarbonyl)cyclohexa-2,5-dien-1-one (17) photorearranged to bicyclohexenone 18 and phenol 19.The 4-acetoxymethyl derivatives 20a and 20b gave the bridged furan adducts 23a, and 23b in excellent yield.Acetoxymethyl-substituted triazene 27 was obtained from 26c; 27 slowly gave alcohol 28 on exposure to the atmosphere.

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