(S)-(+)-2-Methylbutyric acid

CAS No.：1730-91-2

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(S)-(+)-2-Methylbutyric acid Basic information

Product Name:	(S)-(+)-2-Methylbutyric acid
Synonyms:	RARECHEM AL BO 1316;(S)-(+)-2-METHYLBUTYRIC ACID;(S)-(+)-2-Methylbutyric acid 98%;(S)-(+)-2-Methylbutyric acid,98%;(S)-2-Methylbutanoic acid;Butanoic acid, 2-methyl-, (2S)-
CAS:	1730-91-2
MF:	C5H10O2
MW:	102.13
EINECS:
Product Categories:	Carboxylic Acids;Chiral Building Blocks;Organic Building Blocks
Mol File:	1730-91-2.mol

(S)-(+)-2-Methylbutyric acid Chemical Properties

Melting point	-55°C
Boiling point	78 °C/15 mmHg (lit.)
alpha	19 º (c=neat)
density	0.938 g/mL at 25 °C (lit.)
refractive index	n20/D 1.406(lit.)
FEMA	2695 \| 2-METHYLBUTYRIC ACID
Fp	165 °F
storage temp.	2-8°C
pka	4.80±0.10(Predicted)
form	Liquid
color	Clear colorless
optical activity	[α]20/D +19°, neat
BRN	1720485
InChIKey	WLAMNBDJUVNPJU-BYPYZUCNSA-N
CAS DataBase Reference	1730-91-2(CAS DataBase Reference)

Safety Information

Hazard Codes	C
Risk Statements	34-21/22
Safety Statements	26-36/37/39-45
RIDADR	UN 3265 8/PG 2
WGK Germany	3
F	13
HS Code	29159000

MSDS Information

Provider	Language
SigmaAldrich	English
ACROS	English
ALFA	English

(S)-(+)-2-Methylbutyric acid Usage And Synthesis

Chemical Properties	clear colorless liquid
Uses	(S)-(+)-2-Methylbutyric Acid is a chiral starting reagent used in various synthetic preparations.
Uses	(S)-(+)-2-Methylbutyric acid may be used in the preparation of the stereoisomers of (R)-lavandulyl (S)-2-methylbutanoate and (R)-maconelliyl (S)-2-methylbutanoate, which are female sex pheromones found in pink hibiscus mealybug.
Definition	ChEBI: The (S)-enantiomer of 2-methylbutanoic acid.
Purification Methods	Purify the acid by distilling it in vacuo [Sax & Bergmann J Am Chem Soc 77 1910 1955, Doering & Aschner J Am Chem Soc 75 393 1953 ]. The methyl ester is formed by addition of diazomethane and has b 112-115o/760mm, [] D +21.1o (c 1.7, MeOH). [Beilstein 2 IV 888.]

(S)-(+)-2-Methylbutyric acid Preparation Products And Raw materials

Raw materials	2-ETHYLACRYLIC ACID 98-->Decanoic acid-->trans-Cinnamic acid-->Tiglic acid
Preparation Products	(S)-(-)-2-Methyl-1-butanol-->(R)-2-Methylbutyric acid-->2,3-DIMETHYL-2-PENTENE-->BENZYL TIGLATE-->Lauric acid

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