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139631-37-1

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139631-37-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139631-37-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,3 and 1 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139631-37:
(8*1)+(7*3)+(6*9)+(5*6)+(4*3)+(3*1)+(2*3)+(1*7)=141
141 % 10 = 1
So 139631-37-1 is a valid CAS Registry Number.

139631-37-1Relevant articles and documents

Synthesis of 3,3′-neotrehalosadiamine and related 1,1′-aminodisaccharides using disarmed, armed, and superarmed building blocks

Anjum, Shazia,Vetter, Natasha D.,Rubin, Joseph E.,Palmer, David R.J.

, p. 816 - 825 (2013/07/25)

Here we report a high yielding, stereoselective synthesis of the naturally occurring 1,1′-disaccharide neotrehalosadiamine (NTD) and some related analogs. Following an eleven-step sequence, seven of which did not require chromatographic separation, NTD was generated in 60% overall yield from the inexpensive, commercially available precursor 1,2:5,6-di-O-isopropylidene- α-δ-glucofuranose. The key a,b-linkage of NTD was formed in a highly stereoselective manner by taking advantage of the participating effect of the acyl group at O-2 of the donor glycoside. The influence of electronic effects of disarmed, armed, and superarmed glycosyl donors and acceptors on the outcome of 1,1′-glycosidation was also observed. Antibacterial studies using NTD and its analogs show detectable but weak antistaphylococcal activity.

Total synthesis of (-)-hikizimycin employing the strategy of two-directional chain synthesis

Ikemoto, Norihiro,Schreiber, Stuart L.

, p. 2524 - 2536 (2007/10/02)

Hikizimycin (anthelmycin) is a nucleoside antibiotic and anthelmintic agent that represents the most structurally complex member of the long-chain carbohydrate class of natural products. The undecose moiety of hikizimycin was constructed efficiently by em

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