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68235-18-7

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68235-18-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 68235-18-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,2,3 and 5 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 68235-18:
(7*6)+(6*8)+(5*2)+(4*3)+(3*5)+(2*1)+(1*8)=137
137 % 10 = 7
So 68235-18-7 is a valid CAS Registry Number.

68235-18-7Downstream Products

68235-18-7Relevant articles and documents

The Diastereomeric 2-Aminocyclobutanols

Hartmann, Willy,Scholz, Karl-Heinz,Heine, Hans-Georg

, p. 1884 - 1889 (2007/10/02)

Syntheses of the previously unknown 2-aminocyclobutanols are described.The cis-isomer (5) is obtained in two steps by photosensitized cycloaddition of 4-oxazolin-2-one (1) or its acetyl derivative 2 to ethylene and subsequent alkaline hydrolysis of the adducts.Synthesis of the trans-isomer (6) is achieved by catalytic hydrogenation of trans-2-azidocyclobutanol (19), which is available in two steps from the cyclic orthobenzoate 12 and -acetate 13, resp., of cis-1,2-cyclobutandiol (11).

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