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76639-91-3

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76639-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 76639-91-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,6,3 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 76639-91:
(7*7)+(6*6)+(5*6)+(4*3)+(3*9)+(2*9)+(1*1)=173
173 % 10 = 3
So 76639-91-3 is a valid CAS Registry Number.

76639-91-3Relevant articles and documents

PREPARATION OF 2--2,3-DIHYDROOXAZOLOISOINDOL-5(9bH)-ONE DERIVATIVES AND A NEW SYNTHESIS OF THIAMPHENICOL ANALOGUES

Jommi, Giancarlo,Pagliarin, Roberto,Chiarino, Dario,Fantucci, Mario

, p. 653 - 658 (2007/10/02)

A new procedure of protection-deprotection of the amino group and, regioselectively, of the secondary hydroxyl in 2-amino-1--1,3-propanediol, 5, has been developed; this procedure facilitates the synthesis of thiamphenicol analogues with potential antibiotic activity.A new synthesis of the 3-fluoro analogue, 3, and the synthesis of intermediates potentially useful in the preparation of the 3-chloro, 3-bromo, 3-iodo, and 3-acetylthio analogues are described.

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