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1542213-33-1

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1542213-33-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1542213-33-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,4,2,2,1 and 3 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1542213-33:
(9*1)+(8*5)+(7*4)+(6*2)+(5*2)+(4*1)+(3*3)+(2*3)+(1*3)=121
121 % 10 = 1
So 1542213-33-1 is a valid CAS Registry Number.

1542213-33-1Relevant articles and documents

Synthesis of acyclic nucleoside analogues based on 1,2,4-triazolo[1,5-a] pyrimidin-7-ones by one-step Vorbrüggen glycosylation

Khalymbadzha, Igor A.,Shestakova, Tatyana S.,Subbotina, Julia O.,Eltsov, Oleg S.,Musikhina, Alexandra A.,Rusinov, Vladimir L.,Chupakhin, Oleg N.,Karpenko, Inna L.,Jasko, Maxim V.,Kukhanova, Marina K.,Deev, Sergey L.

, p. 1298 - 1305 (2014/02/14)

New acyclovir analogues were obtained by reaction of 1,2,4-triazolo[1,5-a] pyrimidin-7-ones 4a-i with (2-acetoxyethoxy)methyl acetate 5 in the presence of trimethylsilyl trifluoromethanesulfonate (TMSOTf) as catalyst (Vorbrüggen procedure). Coupling betwe

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