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173549-73-0

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173549-73-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 173549-73-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,5,4 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 173549-73:
(8*1)+(7*7)+(6*3)+(5*5)+(4*4)+(3*9)+(2*7)+(1*3)=160
160 % 10 = 0
So 173549-73-0 is a valid CAS Registry Number.

173549-73-0Upstream product

173549-73-0Downstream Products

173549-73-0Relevant articles and documents

An efficient construction of 4-oxo-1,3-diazabicyclo[3.3.0]octanes via thiohydantoins

Kim,Yoo,Shin,Kim,Park

, p. 4001 - 4010 (1995)

New stereoisomeric N-bridged heterocycles, 4-oxo-1,3-diazabicyclo-[3.3.0]octanes (4) were synthesized from trans-4-hydroxy-L-proline (1). Thiohydantoins 3 as the key intermediates were prepared by nucleophilic addition of 1 to isothiocyanates, and subsequent cyclization. These thiohydantoins 3 were readily desulfurized to provide 4.

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