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55660-58-7

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55660-58-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55660-58-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,6,6 and 0 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 55660-58:
(7*5)+(6*5)+(5*6)+(4*6)+(3*0)+(2*5)+(1*8)=137
137 % 10 = 7
So 55660-58-7 is a valid CAS Registry Number.

55660-58-7Upstream product

55660-58-7Downstream Products

55660-58-7Relevant articles and documents

ASYMMETRIC REDUCTION OF DIHYDROFOLATE USING DIHYDROFOLATE REDUCTASE AND CHIRAL BORON-CONTAINING COMPOUNDS

Rees, Lilias,Valente, Edward,Suckling, Colin J.,Wood, Hamish C. S.

, p. 117 - 136 (1986)

The reduction of dihydrofolic acid to chiral tetrahydrofolic acid has been investigated by enzymic and non-enzymic means.With dihydrofolate reductase from E.coli as catalyst and recycling systems for NADPH, up to 1 g of optically pure stable tetrahydrofolate derivatives was obtained.The technique makes the possibility of synthesising chiral 5-formyltetrahydrofolate (leucovorin) for use in cancer rescue therapy attainable.In contrast, although dihydrofolate was reduced by a number of chiral boranes and borates built from amino acids and amino alcohols, enantiomeric excesses were minimal.

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