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635538-05-5

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635538-05-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 635538-05-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,5,5,3 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 635538-05:
(8*6)+(7*3)+(6*5)+(5*5)+(4*3)+(3*8)+(2*0)+(1*5)=165
165 % 10 = 5
So 635538-05-5 is a valid CAS Registry Number.

635538-05-5Downstream Products

635538-05-5Relevant articles and documents

An efficient synthetic strategy for geometrically pure symmetrical and unsymmetrical hydroxystilbenes via McMurry coupling

Mayekar, Narayan V.,Chattopadhyay, Subrata,Nayak, Sandip K.

, p. 2041 - 2046 (2003)

Intramolecular reductive deoxygenation of ethylenedioxy tethered symmetrical and unsymmetrical aromatic bis(carbonyl) ethers with the low-valent titanium (LVT) reagent (TiCl4-Zn-THF) yielded chromatographically separable E/Z-isomers of corresponding cyclic stilbenes which were further dealkylated to obtain geometrically pure hydroxystilbenes. The intramolecular McMurry coupling of the tethered bis(carbonyl) ethers with TiCl 3-Li-THF, on the other hand, directly provided both symmetrical and unsymmetrical phenanthrenes via in situ dealkoxylation of the phenol function. This is the first report of the synthesis of unsymmetrical phenanthrenes by the LVT route.

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