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344750-31-8

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344750-31-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 344750-31-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,7,5 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 344750-31:
(8*3)+(7*4)+(6*4)+(5*7)+(4*5)+(3*0)+(2*3)+(1*1)=138
138 % 10 = 8
So 344750-31-8 is a valid CAS Registry Number.

344750-31-8Downstream Products

344750-31-8Relevant articles and documents

ADDITION TO BICYCLOBUTANE DERIVATIVES. VI. STEREOCHEMISTRY OF ADDITION OF SODIUM THIOLATES TO ACTIVATED BICYCLOBUTANES

Razin, V. V.,Vasin, V. A.,Ogloblin, K. A.

, p. 2223 - 2229 (2007/10/02)

In methanol sodium methanethiolate and thiophenolate add to methyl 1-bicyclobutanecarboxylate, 3-methyl-1-bicyclobutanecarboxylate, and 1-tricycloheptanecarboxylate exclusively at the central bicyclobutane C-C bond with nucleophilic attack at the β position to the methoxycarbonyl group.Here the bicyclic substrates exhibit poorly defined cis-stereoselectivity, while the tricyclic substrate exhibits distinct trans-stereoselectivity.The effect of the nature of the activating group on the stereoselectivity of addition of the anionoid nucleophiles to the activated bicyclobutanes is discussed.

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