33973-59-0 Usage
Chemical Properties
white to slightly beige crystalline powder
Uses
2,2,6,6-Tetramethyl-4-piperidone hydrochloride has been used as a reagent injected in the micromixer using a Rheodyne injection valve for introducing discrete sample pulses into the miniaturised-SYNthesis and Total Analysis System (πSYNTAS).
Purification Methods
Purify the salt by recrystallisation from EtOH/Et2O, MeCN or Me2CO/MeOH. The free base has m 37-39o (after sublimation), b 102-105o/18mm, and the hydrate has m 56-58o (wet Et2O); the hydrobromide has m 203o (from EtOH/Et2O), and the picrate has m 196o (from aqueous EtOH). [Sandris & Ourisson Bull Soc Chim Fr 345 1958, Beilstein 21 H 246, 21 I 273, 21 II 222, 21 III/IV 3278, 21/6 V 538.]
Check Digit Verification of cas no
The CAS Registry Mumber 33973-59-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,9,7 and 3 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 33973-59:
(7*3)+(6*3)+(5*9)+(4*7)+(3*3)+(2*5)+(1*9)=140
140 % 10 = 0
So 33973-59-0 is a valid CAS Registry Number.
InChI:InChI=1/C9H17NO/c1-8(2)5-7(11)6-9(3,4)10-8/h10H,5-6H2,1-4H3/p+1
33973-59-0Relevant articles and documents
PROCESSES FOR MAKING MODULATORS OF CYSTIC FIBROSIS TRANSMEMBRANE CONDUCTANCE REGULATOR
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Paragraph 0548-0552, (2021/08/13)
The disclosure provides processes for preparing a compound of Formula (I).
