218953-26-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 218953-26-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,9,5 and 3 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 218953-26:
(8*2)+(7*1)+(6*8)+(5*9)+(4*5)+(3*3)+(2*2)+(1*6)=155
155 % 10 = 5
So 218953-26-5 is a valid CAS Registry Number.
218953-26-5Relevant articles and documents
The synthesis of the vitamers of biotin
Nudelman, Abraham,Nudelman, Ayelet,Marcovici-Mizrahi, Dana,Flint, Dennis
, p. 157 - 168 (1998)
An efficient synthetic pathway for the preparation of the vitamers of biotin which provides easy access to optically pure KAPA as well as diastereomeric mixtures of DAPA, DTB, and analogs thereof has been developed.
