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74708-32-0

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74708-32-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74708-32-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,7,0 and 8 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 74708-32:
(7*7)+(6*4)+(5*7)+(4*0)+(3*8)+(2*3)+(1*2)=140
140 % 10 = 0
So 74708-32-0 is a valid CAS Registry Number.

74708-32-0Downstream Products

74708-32-0Relevant articles and documents

Enantiomerically Pure Lactones. 2. Approaches to Cis or Trans Multicyclic Lactones

Pirkle, William H.,Adams, Paul E.

, p. 4111 - 4117 (2007/10/02)

Enantiomerically pure bicyclic lactones 1-3 and tricyclic lactones 4 and 5 have been prepared by either of two procedures, each hinging upon the liquid chromatographic seperation of rationally selected diastereomeric derivatives.After seperation, the diastereomers are converted by a simple high-yield reaction sequence to the enantiomeric multiring lactones, none of which has been previously reported in optically active form. The relative strengths and weaknesses of each approach are discussed.Lactones 4 and 5 were α-methylated, these derivatives being suitable for the determination of enantiomeric purity and absolute configuration using the chiral solvating agent (S)-(+)-2,2,2-trifluoro-1-(9-anthryl)ethanol.

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