158867-55-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158867-55-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,8,6 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 158867-55:
(8*1)+(7*5)+(6*8)+(5*8)+(4*6)+(3*7)+(2*5)+(1*5)=191
191 % 10 = 1
So 158867-55-1 is a valid CAS Registry Number.
158867-55-1Relevant articles and documents
Asymmetric synthesis of 3-hydroxyprolines by photocyclization of N-(2-benzoylethyl)glycinamides
Wessig,Wettstein,Giese,Neuburger,Zehnder
, p. 829 - 837 (2007/10/02)
The chiral N-(2-benzoylethyl)-N-tosylglycinamides 1a-c were prepared from the C2-symmetric pyrrolidines 5a-c. Irradiation of these ketones 1a-c gave cis-3-hydroxyprolinamides 10-12 in moderate to good yields (Scheme 3). The de of the photocycli