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73739-68-1

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73739-68-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73739-68-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,7,3 and 9 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 73739-68:
(7*7)+(6*3)+(5*7)+(4*3)+(3*9)+(2*6)+(1*8)=161
161 % 10 = 1
So 73739-68-1 is a valid CAS Registry Number.

73739-68-1Downstream Products

73739-68-1Relevant articles and documents

Une voie d'acces aux alcoxy-5 trimethyl-4,4,7a hexahydro-3aα,4,5,6,7,7aα (3H)-benzofurannones-2

Gosselin, Pascal,Rouessac, Francis,Zamarlik, Henri

, p. 192 - 198 (2007/10/02)

Starting from 2-methoxy (or ethoxy)-3,4-dihydro-2H-pyran, a series of four reactions allows to obtain a good yield of two 4-alcoxy-3,3-dimethyl-1-hydroxymethyl cyclohexenes which are converted to methylenecyclohexylacetic acids by different or sigmatropic reactions.These acids are cyclized at room temperature with concentrated sulfuric acid into bicyclic γ-lactones having a cis-junction.The stereospecificity of this reaction and the stability of the isomers obtained are discussed.

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