203854-51-7 Usage
Chemical Properties
White powder
Uses
Fmoc-l-beta-homoserine(otbu)
Check Digit Verification of cas no
The CAS Registry Mumber 203854-51-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,8,5 and 4 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 203854-51:
(8*2)+(7*0)+(6*3)+(5*8)+(4*5)+(3*4)+(2*5)+(1*1)=117
117 % 10 = 7
So 203854-51-7 is a valid CAS Registry Number.
InChI:InChI=1/C23H27NO5/c1-23(2,3)29-13-15(12-21(25)26)24-22(27)28-14-20-18-10-6-4-8-16(18)17-9-5-7-11-19(17)20/h4-11,15,20H,12-14H2,1-3H3,(H,24,27)(H,25,26)/t15-/m1/s1
203854-51-7Relevant articles and documents
Synthesis of Fmoc-/Boc-/Z-β-amino acids via Arndt-Eistert homologation of Fmoc-/Boc-/Z-α-amino acids employing BOP and PyBOP
Vasanthakumar,Babu, V. V. Suresh
, p. 1691 - 1695 (2007/10/03)
A simple and efficient protocol for Arndt-Eistert chain homologation of Fmoc-/Boc-/Z-α-amino acids using BOP or PyBOP as a coupling agent to the corresponding β-amino acids, synthesizing the key intermediate α-diazoketones as crystalline solids in good yield is described.