The CAS Registry Mumber 70098-67-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,0,9 and 8 respectively; the second part has 2 digits, 6 and 7 respectively. Calculate Digit Verification of CAS Registry Number 70098-67: (7*7)+(6*0)+(5*0)+(4*9)+(3*8)+(2*6)+(1*7)=128 128 % 10 = 8 So 70098-67-8 is a valid CAS Registry Number.
Synthesis of 6-thiaminocycline, a thia analogue of the antibiotic minocycline
Kirchlehner,Seubert
, p. 519 - 525 (2007/10/02)
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