161985-49-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161985-49-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,9,8 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 161985-49:
(8*1)+(7*6)+(6*1)+(5*9)+(4*8)+(3*5)+(2*4)+(1*9)=165
165 % 10 = 5
So 161985-49-5 is a valid CAS Registry Number.
161985-49-5Relevant articles and documents
Stereocontrolled Aldol Additions to α-Methylene-β-Alkoxy Aldehydes: Application to the Synthesis of a C13-C25 Segment of Bafilomycin A1.
Paterson, Ian,Bower, Shelley,McLeod, Malcolm D.
, p. 175 - 178 (2007/10/02)
A boron-mediated, syn-aldol coupling between ethyl ketone 8 and aldehyde 9, followed by directed hydrogenation at C16 and acetonide hydrolysis, gives the C13-C25 segment 6 of bafilomycin A1.