138774-92-2 Usage
Chemical Properties
White to off-white powder
Check Digit Verification of cas no
The CAS Registry Mumber 138774-92-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,7 and 4 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 138774-92:
(8*1)+(7*3)+(6*8)+(5*7)+(4*7)+(3*4)+(2*9)+(1*2)=172
172 % 10 = 2
So 138774-92-2 is a valid CAS Registry Number.
InChI:InChI=1/C19H19NO4/c1-12(18(21)22)20(2)19(23)24-11-17-15-9-5-3-7-13(15)14-8-4-6-10-16(14)17/h3-10,12,17H,11H2,1-2H3,(H,21,22)/t12-/m1/s1
138774-92-2Relevant articles and documents
Synthesis of 9-Fluorenylmethyloxycarbonyl-Protected N-Alkyl Amino Acids by Reduction of Oxazolidinones
Freidinger, Roger M.,Hinkle, Jeffery S.,Perlow, Debra S.,Arison, Byron H.
, p. 77 - 81 (2007/10/02)
A new two-step synthesis of Fmoc-protected N-alkyl amino acids has been developed.The first step involves acid-catalyzed condensation of an Fmoc-protected amino acid with an aldehyde to form an oxazolidinone.This intermediate is then reduced with triethyl