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54080-90-9

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54080-90-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54080-90-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,0,8 and 0 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 54080-90:
(7*5)+(6*4)+(5*0)+(4*8)+(3*0)+(2*9)+(1*0)=109
109 % 10 = 9
So 54080-90-9 is a valid CAS Registry Number.

54080-90-9Upstream product

54080-90-9Downstream Products

54080-90-9Relevant articles and documents

Novel synthetic route to 1-substituted cytosines

Ciszewski,Celewicz,Golankiewicz

, p. 777 - 779 (2007/10/02)

1-Alkylcytosines, cytidine and 2'-deoxy-5-methylcytidine were synthesized in good yields from appropriate 1-alkyluracils, uridine or thymidine derivatives by hydrogenation of 6-substituted tetrazolo[1,5-c]pyrimidin-5(6H)-ones 2 over 10% palladium on charcoal in methanol. Compounds 2 were obtained by the reaction of 1-substituted uracils 1 with sodium azide and phosphorus oxychloride in acetonitrile.

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