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MSDS  : Methanesulfonic acid, isopropyl ester
CAS  : 926-06-7
SYNONYMS  : * IMS * Isopropyl mesylate * Isopropylmethanesulfonate * Isopropyl methane sulphonate * Methanesulfonic acid, 1-methylethyl ester * 2-Propyl methanesulphonate
*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER : PB2275000
CHEMICAL NAME : Methanesulfonic acid, isopropyl ester
CAS REGISTRY NUMBER : 926-06-7
BEILSTEIN REFERENCE NO. : 1750157
REFERENCE : 4-04-00-00013 (Beilstein Handbook Reference)
LAST UPDATED : 199710
DATA ITEMS CITED : 46
MOLECULAR FORMULA : C4-H10-O3-S
MOLECULAR WEIGHT : 138.20
WISWESSER LINE NOTATION : WS1&OY1&1
COMPOUND DESCRIPTOR : Tumorigen
Mutagen
Reproductive Effector
SYNONYMS/TRADE NAMES :
* IMS
* Isopropyl mesylate
* Isopropylmethanesulfonate
* Isopropyl methane sulphonate
* Methanesulfonic acid, 1-methylethyl ester
* 2-Propyl methanesulphonate

*** HEALTH HAZARD DATA ***

** ACUTE TOXICITY DATA **

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Bird - wild bird species
DOSE/DURATION : 287 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AECTCV Archives of Environmental Contamination and Toxicology.
(Springer-Verlag New York, Inc., Service Center, 44 Hartz Way, Secaucus, NJ
070944) V.1- 1973- Volume(issue)/page/year: 12,355,1983

** TUMORIGENIC DATA **

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Administration onto the skin
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 20200 mg/kg/60W-I
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria
Skin and Appendages - tumors
Tumorigenic - tumors at site of application
REFERENCE :
CNREA8 Cancer Research. (Public Ledger Building, Suit 816, 6th & Chestnut
Sts., Philadelphia, PA 19106) V.1- 1941- Volume(issue)/page/year:
47,3402,1987

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 11056 ug/kg/20W-I
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria
Lungs, Thorax, or Respiration - tumors
Blood - lymphoma, including Hodgkin's disease
REFERENCE :
CALEDQ Cancer Letters (Shannon, Ireland). (Elsevier Scientific Pub. Ireland
Ltd., POB 85, Limerick, Ireland) V.1- 1975- Volume(issue)/page/year:
44,199,1989

TYPE OF TEST : TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 1760 mg/kg/29W-I
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria
Blood - lymphoma, including Hodgkin's disease
REFERENCE :
CNREA8 Cancer Research. (Public Ledger Building, Suit 816, 6th & Chestnut
Sts., Philadelphia, PA 19106) V.1- 1941- Volume(issue)/page/year:
47,3402,1987

** REPRODUCTIVE DATA **

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE : 50 mg/kg
SEX/DURATION : female 16 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Newborn - germ cell effects (in offspring)
Reproductive - Effects on Newborn - delayed effects
REFERENCE :
JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot,
POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960-
Volume(issue)/page/year: 18,15,1969

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE : 50 mg/kg
SEX/DURATION : female 16 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - urogenital system
REFERENCE :
JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot,
POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960-
Volume(issue)/page/year: 17,325,1968

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE : 75 mg/kg
SEX/DURATION : female 13 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - musculoskeletal system
REFERENCE :
JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot,
POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960-
Volume(issue)/page/year: 17,325,1968

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE : 50 mg/kg
SEX/DURATION : male 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Paternal Effects - spermatogenesis (incl. genetic material,
sperm morphology, motility, and count)
REFERENCE :
ECREAL Experimental Cell Research. (Academic Press, Inc., 1 E. First St.,
Duluth, MN 55802) V.10- 1950- Volume(issue)/page/year: 33,78,1964

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE : 50 mg/kg
SEX/DURATION : male 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Fertility - pre-implantation mortality (e.g. reduction in
number of implants per female; total number of implants per corpora lutea)
REFERENCE :
GENRA8 Genetical Research. (Cambridge Univ. Press, 32 E. 57th St., New
York, NY 10022) V.1- 1960- Volume(issue)/page/year: 4,333,1963

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE : 50 mg/kg
SEX/DURATION : female 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Fertility - litter size (e.g. # fetuses per litter; measured
before birth)
Reproductive - Fertility - other measures of fertility
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 13,171,1971

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE : 50 mg/kg
SEX/DURATION : male 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Fertility - pre-implantation mortality (e.g. reduction in
number of implants per female; total number of implants per corpora lutea)
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or
resorbed implants per total number of implants)
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
23,288,1972

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE : 100 mg/kg
SEX/DURATION : male 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Paternal Effects - spermatogenesis (incl. genetic material,
sperm morphology, motility, and count)
REFERENCE :
VAAZA2 Virchows Archiv, Abteilung B: Cell Pathology. (Springer-Verlag,
Heidelberger Pl. 3, D-1000 Berlin 33, Fed. Rep. Ger.) V.1- 1968-
Volume(issue)/page/year: 4,276,1970

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE : 200 mg/kg
SEX/DURATION : male 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - cytological changes (including
somatic cell genetic material)
REFERENCE :
IDZAAW Japanese Journal of Genetics. Idengaku Zasshi. (Genetics Soc. of
Japan, 111 Tanida, Mishima, Shizuoka-ken, Japan) V.1- 1921-
Volume(issue)/page/year: 58,345,1983

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - rabbit
DOSE : 100 mg/kg
SEX/DURATION : male 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Paternal Effects - spermatogenesis (incl. genetic material,
sperm morphology, motility, and count)
REFERENCE :
JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot,
POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960-
Volume(issue)/page/year: 5,13,1963

** MUTATION DATA **

TYPE OF TEST : Mutation in microorganisms
TEST SYSTEM : Bacteria - Salmonella typhimurium
DOSE/DURATION : 250 nmol/L
REFERENCE :
TIVIEQ Toxicology In Vitro. (Pergamon Press Inc., Maxwell House, Fairview
Park, Elmsford, NY 10523) V.1- 1987- Volume(issue)/page/year: 4,167,1990

TYPE OF TEST : Mutation in microorganisms
TEST SYSTEM : Bacteria - Escherichia coli
DOSE/DURATION : 20 mmol/L
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 8,229,1969

TYPE OF TEST : Mutation test systems - not otherwise specified
TEST SYSTEM : Bacteria - Escherichia coli
DOSE/DURATION : 60 mg/tube
REFERENCE :
MUTAEX Mutagenesis. (Oxford Univ. Press, Pinkhill House, Southfield Road,
Eynsham, Oxford OX8 1JJ, UK) V.1- 1986- Volume(issue)/page/year: 4,179,1989

TYPE OF TEST : Phage inhibition capacity
TEST SYSTEM : Bacteria - Escherichia coli
DOSE/DURATION : 500 mg/L
REFERENCE :
VIRLAX Virology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802)
V.1- 1955- Volume(issue)/page/year: 99,257,1979

TYPE OF TEST : Phage inhibition capacity
TEST SYSTEM : Microorganism - not otherwise specified
DOSE/DURATION : 70 mmol/L
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 36,265,1976

TYPE OF TEST : Specific locus test
ROUTE OF EXPOSURE : Oral
TEST SYSTEM : Insect - Drosophila melanogaster
DOSE/DURATION : 25 mmol/L/6H
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 222,359,1989

TYPE OF TEST : DNA adduct
TEST SYSTEM : Fish - salmon Sperm
DOSE/DURATION : 3200 nmol/19H (Continuous)
REFERENCE :
BIJOAK Biochemical Journal. (Biochemical Soc. Book Depot, POB 32, Commerce
Way, Colchester, Essex CO2 8HP, UK) V.1- 1906- Volume(issue)/page/year:
145,73,1975

TYPE OF TEST : DNA damage
TEST SYSTEM : Human Fibroblast
DOSE/DURATION : 8 mmol/L
REFERENCE :
CRNGDP Carcinogenesis (London). (Oxford Univ. Press, Pinkhill House,
Southfield Road, Eynsham, Oxford OX8 1JJ, UK) V.1- 1980-
Volume(issue)/page/year: 3,7,1982

TYPE OF TEST : DNA damage
ROUTE OF EXPOSURE : Unreported
TEST SYSTEM : Rodent - rat
DOSE/DURATION : 50 mg/kg
REFERENCE :
PACHAS Pure and Applied Chemistry. (Pergamon Press Ltd., Headington Hill
Hall, Oxford OX3 0BW, UK) V.1- 1960- Volume(issue)/page/year:
42,209,1975

TYPE OF TEST : Dominant lethal test
ROUTE OF EXPOSURE : Intraperitoneal
TEST SYSTEM : Rodent - rat
DOSE/DURATION : 50 mg/kg
REFERENCE :
GENRA8 Genetical Research. (Cambridge Univ. Press, 32 E. 57th St., New
York, NY 10022) V.1- 1960- Volume(issue)/page/year: 4,333,1963

TYPE OF TEST : Micronucleus test
ROUTE OF EXPOSURE : Intraperitoneal
TEST SYSTEM : Rodent - mouse
DOSE/DURATION : 50 mg/kg
REFERENCE :
TOLED5 Toxicology Letters. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1977- Volume(issue)/page/year: 7,329,1981

TYPE OF TEST : Micronucleus test
ROUTE OF EXPOSURE : Oral
TEST SYSTEM : Rodent - mouse
DOSE/DURATION : 200 mg/kg
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 349,241,1996

TYPE OF TEST : Specific locus test
ROUTE OF EXPOSURE : Intraperitoneal
TEST SYSTEM : Rodent - mouse
DOSE/DURATION : 50 mg/kg
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 328,73,1995

TYPE OF TEST : Unscheduled DNA synthesis
ROUTE OF EXPOSURE : Intraperitoneal
TEST SYSTEM : Rodent - mouse
DOSE/DURATION : 150 mg/kg
REFERENCE :
IDZAAW Japanese Journal of Genetics. Idengaku Zasshi. (Genetics Soc. of
Japan, 111 Tanida, Mishima, Shizuoka-ken, Japan) V.1- 1921-
Volume(issue)/page/year: 54,405,1979

TYPE OF TEST : DNA inhibition
ROUTE OF EXPOSURE : Intraperitoneal
TEST SYSTEM : Rodent - mouse
DOSE/DURATION : 200 mg/kg
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 46,305,1977

TYPE OF TEST : Cytogenetic analysis
ROUTE OF EXPOSURE : Intraperitoneal
TEST SYSTEM : Rodent - mouse
DOSE/DURATION : 100 mg/kg
REFERENCE :
TOLED5 Toxicology Letters. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1977- Volume(issue)/page/year: 7,329,1981

TYPE OF TEST : Dominant lethal test
ROUTE OF EXPOSURE : Intraperitoneal
TEST SYSTEM : Rodent - mouse
DOSE/DURATION : 50 mg/kg
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
23,288,1972

TYPE OF TEST : Sperm Morphology
ROUTE OF EXPOSURE : Intraperitoneal
TEST SYSTEM : Rodent - mouse
DOSE/DURATION : 150 mg/kg
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 54,257,1978

TYPE OF TEST : Sister chromatid exchange
TEST SYSTEM : Rodent - hamster Lung
DOSE/DURATION : 1 gm/L
REFERENCE :
CNREA8 Cancer Research. (Public Ledger Building, Suit 816, 6th & Chestnut
Sts., Philadelphia, PA 19106) V.1- 1941- Volume(issue)/page/year:
44,3270,1984

TYPE OF TEST : Mutation in mammalian somatic cells
TEST SYSTEM : Rodent - hamster Lung
DOSE/DURATION : 1 gm/L
REFERENCE :
CNREA8 Cancer Research. (Public Ledger Building, Suit 816, 6th & Chestnut
Sts., Philadelphia, PA 19106) V.1- 1941- Volume(issue)/page/year:
44,3270,1984

TYPE OF TEST : Mutation in mammalian somatic cells
TEST SYSTEM : Rodent - hamster Ovary
DOSE/DURATION : 2 mmol/L
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 57,217,1978

*** STATUS IN U.S. ***

EPA GENETOX PROGRAM 1988, Positive: In vivo cytogenetics-mammalian oocyte

EPA GENETOX PROGRAM 1988, Positive: D melanogaster-whole sex chrom. loss

EPA GENETOX PROGRAM 1988, Positive: D melanogaster-reciprocal translocation

EPA GENETOX PROGRAM 1988, Positive: Rodent dominant lethal; Rodent heritable
translocation

EPA GENETOX PROGRAM 1988, Positive: Sperm morphology-rabbit; D melanogaster
Sex-linked lethal

EPA GENETOX PROGRAM 1988, Positive: UDS in mouse germ cells; S pombe-forward
mutation

EPA GENETOX PROGRAM 1988, Negative: D melanogaster-partial sex chrom. loss

EPA GENETOX PROGRAM 1988, Inconclusive: Cytogenetics-male germ cell; Mouse
specific locus

EPA TSCA Section 8(b) CHEMICAL INVENTORY

EPA TSCA Section 8(d) unpublished health/safety studies

EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998


*** END OF RECORD ***
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ALL Chemical Property And Toxicity Analysis PAGES IN THIS GROUP
NAMECAS
Methane, bromochlorodifluoro-, pyrolyzate 54301-15-4
Methanesulfon-m-anisidide,4'-(3-(methylamino)-9-acridinylamino)- 66147-74-8
Methanesulfonic acid 75-75-2
Methanesulfonic acid, acetyl- 75-75-2
Methanesulfonic acid, allyl ester 6728-21-8
Methanesulfonic acid, (antipyrinylamino)-, monosodiumsalt 129-89-5
Methanesulfonic acid, (antipyrinylmethylamino)-,monosodium salt 68-89-3
Methanesulfonic acid, (antipyrinylmethylamino)-,sodium salt, monohydrate 5907-38-0
Methanesulfonic acid, (antipyrinylmethylamino)-,sodium salt, mixed with sodium nitrite (1:1) 5907-38-0
Methanesulfonic acid,(arsenobis((6-hydroxy-m-phenylene)imino))di-,disodium salt 618-82-6
Methanesulfonic acid, (3-arsenoso-6-hydroxyanilino)-,sodium salt 618-82-6
Methane, bromochlorodinitro- 33829-48-0
Methanesulfonic acid,1-(p-((5-benzamidopentyl)oxy)anilino)-, sodium salt 33829-48-0
Methanesulfonic acid,(3-(bis((carbamoylmethyl)thio)arsino)-5-(2-hydroxyethoxy)anilino)-, sodium salt 33829-48-0
Methanesulfonic acid, 1-(p-butoxyanilino)-, sodiumsalt 33829-48-0
Methanesulfonic acid, 1-(p-butoxy-N-methylanilino)-,sodium salt 33829-48-0
Methanesulfonic acid,(p-((p-butoxyphenyl)sulfonyl)anilino)-, sodium salt,dihydrate 33829-48-0
Methanesulfonic acid, 1-((6-butoxy-3-pyridyl)amino)-,sodium salt 33829-48-0
Methanesulfonic acid, butyl ester 1912-32-9
Methanesulfonic acid, chloro-, ethyl ester 16764-27-5
Methanesulfonic acid,2-(3-(2-chloroethyl)-3-nitrosoureido)ethyl ester 61866-12-4
Methanesulfonic acid,((3-cyclohexyl-1,6-dimethyl-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl) amino)-, sodium salt 61866-12-4
Methane, bromodichloro- 75-27-4
Methanesulfonic acid,((3-cyclohexyl-1,6-dimethyl-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl) methylamino)-, sodium salt 75-27-4
Methanesulfonic acid,((2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl) methylamino)-, sodium salt, mixt. withN-(1-methylethyl)-4,4-diphenyl cyclohexanaminehydrochloride 59915-31-0
Methanesulfonic acid,(3-(dihydroxyarsino)-6-(2-hydroxyethoxy)anilino)-,sodium salt 59915-31-0
Methanesulfonic acid, diiodo-, sodium salt 124-88-9
Methanesulfonic acid, 3-(dimethylamino)propyl ester,hydrochloride 52413-48-6
Methanesulfonic acid,((2,3-dimethyl-1-phenyl-5-oxo-3-pyrazolin-4-yl)methylamino)-, magnesium salt 6150-97-6
Methanesulfonic acid, (ethylenebis(methylimino))bis-,disodium salt 6150-97-6
Methanesulfonic acid, (ethylenedinitrilo)tetra-,tetrasodium salt 13046-10-1
Methanesulfonic acid, ethyl ester 62-50-0
Methanesulfonic acid, 4-fluorobutyl ester 592-61-0
Methane, bromodifluoro- 1511-62-2
Methanesulfonic acid, 2-fluoroethyl ester 461-31-4
Methanesulfonic acid, 6-fluorohexyl ester 352-95-4
Methanesulfonic acid, 5-fluoroheptyl ester 352-95-4
Methanesulfonic acid, 3-fluoropropyl ester 352-95-4
Methanesulfonic acid, hydroxy-, sodium salt 870-72-4
Methanesulfonic acid, iodo-, sodium salt 126-31-8
Methanesulfonic acid, isopropyl ester 926-06-7
Methanesulfonic acid, methoxymethyl ester 25289-73-0
Methanesulfonic acid, methyl ester 66-27-3
Methanesulfonic acid,(1-methyl-2-phenethyl)hydrazino- 3583-81-1
Methane, bromodinitro- 996-67-8
Methanesulfonic acid, 1-methylpropyl ester 16156-54-0
Methanesulfonic acid, 1-methylpropyl ester, (+-)- 119943-51-0
Methanesulfonic acid, 1-methylpropyl ester, (R)- 66194-68-1
Methanesulfonic acid, 1-methylpropyl ester, (S)- 50599-13-8
Methanesulfonic acid, (methylsulfonyl)-, 2-bromoethylester 88343-74-2

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