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137255-50-6

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137255-50-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137255-50-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,5 and 5 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 137255-50:
(8*1)+(7*3)+(6*7)+(5*2)+(4*5)+(3*5)+(2*5)+(1*0)=126
126 % 10 = 6
So 137255-50-6 is a valid CAS Registry Number.

137255-50-6Relevant articles and documents

Synthesis and Antibacterial Activities of C-21 Functionalized Derivatives of (9R)-9-Amino-9-deoxoerythromycins A and B

Lartey, Paul A.,DeNinno, Shari L.,Faghih, Ramin,Hardy, Dwight J.,Clement, Jacob J.,et al.

, p. 3390 - 3395 (2007/10/02)

Selective protection of (9R)-9-amino-9-deoxoerythromycin A allowed for elimination of the 12-hydroxyl group to afford a versalite 12,21-olefin intermediate.Further modifications of the intermediate led to the syntheses of (9R)-9-deoxo-9-(N,N-dimethylamino

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