213738-71-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 213738-71-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,7,3 and 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 213738-71:
(8*2)+(7*1)+(6*3)+(5*7)+(4*3)+(3*8)+(2*7)+(1*1)=127
127 % 10 = 7
So 213738-71-7 is a valid CAS Registry Number.
213738-71-7Relevant articles and documents
Studies directed toward the total synthesis of kabiramide C: Asymmetric synthesis of the C7-C19 fragment
Liu, Ping,Panek, James S.
, p. 6143 - 6146 (2007/10/03)
The synthesis of the C7-C19 tris-oxazole fragment 4 of kabiramide C via a BF3·OEt2 promoted condensation between dimethyl acetal 12 and (S)- silane 6 as the crucial synthetic step is described.