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17663-44-4

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17663-44-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17663-44-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,6 and 3 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 17663-44:
(7*1)+(6*7)+(5*6)+(4*6)+(3*3)+(2*4)+(1*4)=124
124 % 10 = 4
So 17663-44-4 is a valid CAS Registry Number.

17663-44-4Relevant articles and documents

Synthesis of dihydroxylated prolines and iminocyclitols from five-membered endocyclic enecarbamates. Total synthesis of the potent glycosidase inhibitor (2R,3R,4R,5R)-2,5-dihydroxymethyl-3,4-dihydroxypyrrolidine (DMDP)

Garcia, Ariel Lázaro L.,Correia, Carlos Roque D.

, p. 1553 - 1557 (2007/10/03)

cis- and trans-3,4-Dihydroxylated prolines and the iminocyclitol 1,4-dideoxy-1,4-imino ribitol were synthesized employing a strategy involving the Heck arylation of five-membered endocyclic enecarbamates with aryldiazonium salts followed by oxidative cleavage of the electron-rich aromatic ring. The total synthesis of the potent α- and β-glucosidase inhibitor (2R,3R,4R,5R)-2,5-hydroxymethyl-3,4-dihydroxypyrrolidine (DMDP) was also achieved by the same strategy in ten steps from a chiral five-membered enecarbamate in 12% overall yield.

(±)-4-amino-4,5-dideoxyribose, (±)-4-amino-4-deoxyerythrose, and (±)-dihydroxyproline derivatives from N-dienyl-γ-lactams

Behr,Defoin,Mahmood,Streith

, p. 1166 - 1177 (2007/10/02)

Hetero-Diels-Alder cycloaddition of acylnitroso dienophile 4 with the N-(butadienyl)pyrrolidinone derivatives 2a,b led with complete regioselectivity to the oxazine adducts 5a,b. Sequential osmylation, protection of the ensuing glycol, and reduction of th

Synthesis of (3S,4S)-3,4-dihydroxyprolines from L-tartaric acid

Arakawa,Yoshifuji

, p. 2219 - 2224 (2007/10/02)

Natural (2S,3S,4S)-3,4-dihydroxyproline (1) and the new (2R,3S,4S)-isomer (7) have been synthesized from L-tartaric acid via cyanosilylation of the cyclic Schiff base.

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