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81619-00-3

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81619-00-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81619-00-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,1 and 9 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81619-00:
(7*8)+(6*1)+(5*6)+(4*1)+(3*9)+(2*0)+(1*0)=123
123 % 10 = 3
So 81619-00-3 is a valid CAS Registry Number.
InChI:InChI=1/C13H10F3NO2/c1-8(13(14,15)16)7-10-12(18)19-11(17-10)9-5-3-2-4-6-9/h2-8H,1H3/b10-7+

81619-00-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-phenyl-4-(3,3,3-trifluoro-2-methylpropylidene)-1,3-oxazol-5-one

1.2 Other means of identification

Product number -
Other names -

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:81619-00-3 SDS

81619-00-3Relevant articles and documents

New and Effective Routes to Fluoro Analogues of Aliphatic and Aromatic Amino Acids

Ojima, Iwao,Kato, Koji,Nakahashi, Kazuaki,Fuchikami, Takamasa,Fujita, Makoto

, p. 4511 - 4522 (2007/10/02)

New and efficient syntheses of 4,4,4-trifluorovaline (1), 5,5,5-trifluoronorvaline (2), 5,5,5-trifluoroleucine (5), 6,6,6-trifluoronorleucine (6), 4,5,6,7-tetrafluorotryptophan (25), and α-(trifluoromethyl)-β-alanine are studied.Trifluorovaline (1) and trifluoronorvaline (2) are synthesized through amidocarbonylation of 2-(trifluoromethyl)propanal (2-TFMPA) and 3-(trifluoromethyl)propanal (3-TFMPA), respectively, followed by hydrolysis.Trifluoroleucine (5) and trifluoronorleucine (6) are synthesized by using modified Erlenmeyer's azlactone method from 2-TFMPA and 3-TFMPA, respectively. (S)- and (R)-trifluoronorvalines and trifluoronorleucines with high enantiomeric purities (95-100percent ee) are obtained through enzymatic optical resolution of N-acetyltrifluoronorvaline (4) and N-acetyltrifluoronorleucine (17) with the use of a porcine kidney acylase I.Optically active trifluoronorleucine is also obtained via the asymmetric hydrogenation of (Z)-N-benzoyldehydrotrifluoroleucine ethyl ester (10a-Z) with a chiral rhodium catalyst, ClO4, followed by hydrolysis.Unexpectedly high diastereoselectivities (80-87percent ee) are observed in the hydrogenation of (Z)-N-benzoyldehydrotrifluoroleucine ethyl ester (11b) and (Z)-N-benzoyl-4-(pentafluorophenyl)dehydronorvaline (14-Z) over palladium/carbon. 4,5,6,7-Tetrafluorotryptophan (25) and 4,5,6,7-tetrahydrotryptamine (30) are synthesized from 3-formyl-4,5,6,7-tetrafluoroindole (22a) in 51percent (four steps) and 83percent (two steps) overall yields, respectively. 4,5,6,7-Tetrafluoroindoleacetic acid (28) is obtained from 1-acetyl-3-(acetoxymethyl)-4,5,6,7-tetrafluoroindole (23a) in four steps in 65percent overall yield.The 3-formyl- and 1-acetyl-3-(acetoxymethyl)tetrafluoroindoles (22a, 23a) are prepared through selenium dioxide oxidation of 1-acyl-3-methyl-4,5,6,7-tetrafluoroindole (21), which is obtained via the cyclization of a Schiff base of 2-(pentafluorophenyl)propanal (2-PFPPA), in good yields.

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