19701-83-8 Usage
Chemical Properties
White powder
Purification Methods
Crystallise the amide from EtOAc/Et2O, then from EtOH and Et2O. Also recrystallise it twice by dissolving ~2.5g in hot 200mL of toluene and cooling. It sublimes at ~170o , so its m is measured in a sealed tube. [Applewhite & Niemann J Am Chem Soc 81 2212 1959, Beilstein 4 IV 2500.]
Check Digit Verification of cas no
The CAS Registry Mumber 19701-83-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,0 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 19701-83:
(7*1)+(6*9)+(5*7)+(4*0)+(3*1)+(2*8)+(1*3)=118
118 % 10 = 8
So 19701-83-8 is a valid CAS Registry Number.
InChI:InChI=1/C6H12N2O2/c1-4(6(10)7-3)8-5(2)9/h4H,1-3H3,(H,7,10)(H,8,9)/t4-/m0/s1
19701-83-8Relevant articles and documents
A structural study of peptides and proteins containing L-alanine residues by 13C NMR spectroscopy combined with ab initio chemical shift calculations
Asakawa,Kurosu,Ando,Shoji,Ozaki
, p. 119 - 129 (1994)
-
PROCESS FOR STRAIGHTENING KERATIN FIBRES WITH A HEATING MEANS AND DENATURING AGENTS
-
, (2010/03/02)
The invention relates to a process for straightening keratin fibres, comprising: (i) a step in which a straightening composition containing at least two denaturing agents is applied to the keratin fibres, (ii) a step in which the temperature of the keratin fibres is raised, using a heating means, to a temperature of between 110 and 250° C.
