The CAS Registry Mumber 78442-83-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,4,4 and 2 respectively; the second part has 2 digits, 8 and 3 respectively. Calculate Digit Verification of CAS Registry Number 78442-83: (7*7)+(6*8)+(5*4)+(4*4)+(3*2)+(2*8)+(1*3)=158 158 % 10 = 8 So 78442-83-8 is a valid CAS Registry Number.
Asymmetric Total Synthesis of Erythromycin. 2. Synthesis of an Erythronolide A Lactone System
Woodward, R. B.,Logusch, E,,Nambiar, K. P.,Sakan, K.,Ward, D. E.,et al.
, p. 3213 - 3215 (2007/10/02)
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Get Best Price for78442-83-8(1S,2R,4R,5R,7R,9S,10R,13R,14R,15R,19S,20S)-13-Ethyl-4,14-dihydroxy-2,4,10,14,19,20-hexamethyl-7-(2,4,6-trimethyl-phenyl)-6,8,12,16-tetraoxa-18-aza-tricyclo[13.3.1.15,9]icosane-11,17-dione