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66386-42-3

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66386-42-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66386-42-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,3,8 and 6 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 66386-42:
(7*6)+(6*6)+(5*3)+(4*8)+(3*6)+(2*4)+(1*2)=153
153 % 10 = 3
So 66386-42-3 is a valid CAS Registry Number.

66386-42-3Relevant articles and documents

Reactions of Ethyl and Phenyl Chloroformate with Adenosine Derivatives as an Entry to N6-Ureido-Linked Spin-Labeled Adenosine and Other Modified Adenosines

Anzai, Kentaro,Hunt, John B.,Zon, Gerald,Egan, William

, p. 4281 - 4285 (2007/10/02)

2',3',5'-O-Triacetyl-N6,N6-bis(phenoxycarbonyl)adenosine (10) reacted readlly with 4-amino-2,2,6,6-tetramethylpiperidinyl-1-oxy to afford an 87percent yield of ureido compound 16, which was then deacetylated to give spin-labeled adenosine derivative 19 in 56percent yield.Adenosine derivatives 24-27 were prepared from 10 in a similar manner.Treatment of 2',3'-O-isopropylideneadenosine (2) with phenyl chloroformate gave O5',8-cycloadenosines 13 and 14; structure 13 was assigned on the basis of long-range selective proton-decoupled (LSPD) 13C NMR spectra.O5',8-Cycloadenosine 8 was similarly prepared from 2 and ethyl chloroformate.Reaction of 2',3',5'-O-triacetyladenosine (9) with phenyl chloroformate in the presence of dimethylformamide afforded amidine derivative 12 (74percent).

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