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78138-99-5

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78138-99-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 78138-99-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,1,3 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 78138-99:
(7*7)+(6*8)+(5*1)+(4*3)+(3*8)+(2*9)+(1*9)=165
165 % 10 = 5
So 78138-99-5 is a valid CAS Registry Number.

78138-99-5Relevant articles and documents

Synthesis of polyhydroxylated quinolizidine and indolizidine scaffolds from sugar-derived lactams via a one-pot reduction/Mannich/Michael sequence

Szczesniak, Piotr,Stecko, Sebastian,Maziarz, Elzbieta,Staszewska-Krajewska, Olga,Furman, Bartlomiej

, p. 10487 - 10503 (2015/02/19)

A direct approach to the synthesis of indolizidine and quinolizidine scaffolds of iminosugars is described. The presented strategy is based on a one-pot sugar lactam reduction with Schwartz's reagent followed by a diastereoselective Mannich/Michael tandem reaction of the resulting sugar imine with Danishefsky's diene. The stereochemical course of the investigated reaction has been explained in detail. The obtained bicyclic products are attractive building blocks for the synthesis of various naturally occurring polyhydroxylated alkaloids and their derivatives.

A new DNA building block, 4′-selenothymidine: Synthesis and modification to 4′-seleno-AZT as a potential anti-HIV agent

Alexander, Varughese,Choi, Won Jun,Chun, Jeongha,Kim, Hea Ok,Jeon, Ji Hye,Tosh, Dilip K.,Lee, Hyuk Woo,Chandra, Girish,Choi, Jungwon,Jeong, Lak Shin

supporting information; experimental part, p. 2242 - 2245 (2010/08/05)

The first synthesis of 4′-selenothymidine (1), a novel DNA building block, and 4′-seleno-AZT (2) was accomplished from 2-deoxy-d-ribose via stereoselective formation of 2-deoxy-4-seleno-d-furanose 17 and a Pummerer-type base condensation as key steps. 4′-

Synthesis of the chiral CD rings of paclitaxel from 2-deoxy-D-ribose: Novel 1,2-addition of a dienolate to a chiral ketone

Takahashi, Takashi,Hirose, Yoichiro,Iwamoto, Hajime,Doi, Takayuki

, p. 5742 - 5743 (2007/10/03)

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