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1313600-73-5

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1313600-73-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1313600-73-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,1,3,6,0 and 0 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1313600-73:
(9*1)+(8*3)+(7*1)+(6*3)+(5*6)+(4*0)+(3*0)+(2*7)+(1*3)=105
105 % 10 = 5
So 1313600-73-5 is a valid CAS Registry Number.

1313600-73-5Downstream Products

1313600-73-5Relevant articles and documents

The use of symmetry in enantioselective synthesis: Four pairs of chrysene enantiomers prepared from 19-nortestosterone

Stastna, Eva,Rath, Nigam P.,Covey, Douglas F.

, p. 4685 - 4694 (2011/07/09)

Expansion of the D-ring of 19-norsteroids with incorporation of the steroid C-18 methyl group into a newly formed six-membered ring provides easy access to the chrysene ring system. By taking advantage of the symmetry of the chrysene ring system and avoiding meso chrysene intermediates, four optically pure 2,8-difunctionalized (C-2 hydroxyl group and C-8 oxo group) hexadecahydrochrysene diastereomers, and their corresponding optically pure enantiomers were prepared from 19-nortestosterone. The eight chrysene stereoisomers are of interest as starting materials for preparing chrysene analogues of physiologically important neurosteroids.

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