Organooxygen compounds
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[6-(Tetrahydropyran-4-yloxy)pyrid-3-yl]methanol, 97%, Thermo Scientific™
CAS: 906352-79-2 Molecular Formula: C11H15NO3 Molecular Weight (g/mol): 209.245 MDL Number: MFCD09817494 InChI Key: UTEOAQJLPJOMJS-UHFFFAOYSA-N Synonym: 6-oxan-4-yloxy pyridin-3-yl methanol,6-tetrahydropyran-4-yloxy pyrid-3-yl methanol,6-tetrahydropyran-4-yloxy pyridin-3-yl methanol,6-tetrahydro-2h-pyran-4-yloxy pyridin-3-yl methanol,6-oxan-4-yl oxy pyridin-3-yl methanol,5-hydroxymethyl-2-tetrahydropyran-4-yloxy pyridine,3-pyridinemethanol,6-tetrahydro-2h-pyran-4-yl oxy,6-tetrahydro-2h-pyran-4-yl oxy pyridin-3-yl methanol,6-2h-3,4,5,6-tetrahydropyran-4-yloxy-3-pyridyl methan-1-ol PubChem CID: 24229579 IUPAC Name: [6-(oxan-4-yloxy)pyridin-3-yl]methanol SMILES: C1COCCC1OC2=NC=C(C=C2)CO
| PubChem CID | 24229579 |
|---|---|
| CAS | 906352-79-2 |
| Molecular Weight (g/mol) | 209.245 |
| MDL Number | MFCD09817494 |
| SMILES | C1COCCC1OC2=NC=C(C=C2)CO |
| Synonym | 6-oxan-4-yloxy pyridin-3-yl methanol,6-tetrahydropyran-4-yloxy pyrid-3-yl methanol,6-tetrahydropyran-4-yloxy pyridin-3-yl methanol,6-tetrahydro-2h-pyran-4-yloxy pyridin-3-yl methanol,6-oxan-4-yl oxy pyridin-3-yl methanol,5-hydroxymethyl-2-tetrahydropyran-4-yloxy pyridine,3-pyridinemethanol,6-tetrahydro-2h-pyran-4-yl oxy,6-tetrahydro-2h-pyran-4-yl oxy pyridin-3-yl methanol,6-2h-3,4,5,6-tetrahydropyran-4-yloxy-3-pyridyl methan-1-ol |
| IUPAC Name | [6-(oxan-4-yloxy)pyridin-3-yl]methanol |
| InChI Key | UTEOAQJLPJOMJS-UHFFFAOYSA-N |
| Molecular Formula | C11H15NO3 |
3-(Phenoxymethyl)benzaldehyde, 97%, Thermo Scientific™
CAS: 104508-27-2 Molecular Formula: C14H12O2 Molecular Weight (g/mol): 212.248 MDL Number: MFCD09025913 InChI Key: KZUJGQAFTCDBKA-UHFFFAOYSA-N Synonym: 3-phenoxymethyl benzaldehyde,benzaldehyde,3-phenoxymethyl,acmc-1cada PubChem CID: 21288517 IUPAC Name: 3-(phenoxymethyl)benzaldehyde SMILES: C1=CC=C(C=C1)OCC2=CC=CC(=C2)C=O
| PubChem CID | 21288517 |
|---|---|
| CAS | 104508-27-2 |
| Molecular Weight (g/mol) | 212.248 |
| MDL Number | MFCD09025913 |
| SMILES | C1=CC=C(C=C1)OCC2=CC=CC(=C2)C=O |
| Synonym | 3-phenoxymethyl benzaldehyde,benzaldehyde,3-phenoxymethyl,acmc-1cada |
| IUPAC Name | 3-(phenoxymethyl)benzaldehyde |
| InChI Key | KZUJGQAFTCDBKA-UHFFFAOYSA-N |
| Molecular Formula | C14H12O2 |
7-Bromo-3,4-dihydro-2H-1,5-benzodioxepine, 97%, Thermo Scientific™
CAS: 147644-11-9 Molecular Formula: C9H9BrO2 Molecular Weight (g/mol): 229.073 MDL Number: MFCD00508291 InChI Key: AZCHNKNSOZJHSH-UHFFFAOYSA-N Synonym: 7-bromo-3,4-dihydro-2h-benzo b 1,4 dioxepine,2h-1,5-benzodioxepin, 7-bromo-3,4-dihydro,acmc-1c5pl,7-bromo-2h,3h,4h-benzo b 1,4-dioxepin,7-bromo-3,4-dihydro-2h-1,5-benzodioxepin,2h-1,5-benzodioxepin,7-bromo-3,4-dihydro,7-bromo-3,4-dihydro-1,5-benzodioxepin PubChem CID: 2776394 IUPAC Name: 7-bromo-3,4-dihydro-2H-1,5-benzodioxepine SMILES: C1COC2=C(C=C(C=C2)Br)OC1
| PubChem CID | 2776394 |
|---|---|
| CAS | 147644-11-9 |
| Molecular Weight (g/mol) | 229.073 |
| MDL Number | MFCD00508291 |
| SMILES | C1COC2=C(C=C(C=C2)Br)OC1 |
| Synonym | 7-bromo-3,4-dihydro-2h-benzo b 1,4 dioxepine,2h-1,5-benzodioxepin, 7-bromo-3,4-dihydro,acmc-1c5pl,7-bromo-2h,3h,4h-benzo b 1,4-dioxepin,7-bromo-3,4-dihydro-2h-1,5-benzodioxepin,2h-1,5-benzodioxepin,7-bromo-3,4-dihydro,7-bromo-3,4-dihydro-1,5-benzodioxepin |
| IUPAC Name | 7-bromo-3,4-dihydro-2H-1,5-benzodioxepine |
| InChI Key | AZCHNKNSOZJHSH-UHFFFAOYSA-N |
| Molecular Formula | C9H9BrO2 |
2-Bromo-2',4'-dimethoxyacetophenone, 98%
CAS: 60965-26-6 Molecular Formula: C10H11BrO3 Molecular Weight (g/mol): 259.099 MDL Number: MFCD00000197 InChI Key: PKVBZABQCCQHLD-UHFFFAOYSA-N Synonym: 2-bromo-1-2,4-dimethoxyphenyl ethanone,2-bromo-2',4'-dimethoxyacetophenone,2,4-dimethoxyphenacyl bromide,2-bromo-1-2',4'-dimethoxyphenyl ethanone,2-bromo-1-2,4-dimethoxyphenyl ethan-1-one,ethanone, 2-bromo-1-2,4-dimethoxyphenyl,2-bromo-2',4'-dimethoxyacetopheneone,1-2,4-dimethoxyphenyl-2-bromoethan-1-one,pubchem13433,acmc-1ba4l PubChem CID: 98683 IUPAC Name: 2-bromo-1-(2,4-dimethoxyphenyl)ethanone SMILES: COC1=CC(=C(C=C1)C(=O)CBr)OC
| PubChem CID | 98683 |
|---|---|
| CAS | 60965-26-6 |
| Molecular Weight (g/mol) | 259.099 |
| MDL Number | MFCD00000197 |
| SMILES | COC1=CC(=C(C=C1)C(=O)CBr)OC |
| Synonym | 2-bromo-1-2,4-dimethoxyphenyl ethanone,2-bromo-2',4'-dimethoxyacetophenone,2,4-dimethoxyphenacyl bromide,2-bromo-1-2',4'-dimethoxyphenyl ethanone,2-bromo-1-2,4-dimethoxyphenyl ethan-1-one,ethanone, 2-bromo-1-2,4-dimethoxyphenyl,2-bromo-2',4'-dimethoxyacetopheneone,1-2,4-dimethoxyphenyl-2-bromoethan-1-one,pubchem13433,acmc-1ba4l |
| IUPAC Name | 2-bromo-1-(2,4-dimethoxyphenyl)ethanone |
| InChI Key | PKVBZABQCCQHLD-UHFFFAOYSA-N |
| Molecular Formula | C10H11BrO3 |
Ethyl 3,3-diethoxypropionate, 96%
CAS: 10601-80-6 Molecular Formula: C9H18O4 Molecular Weight (g/mol): 190.239 MDL Number: MFCD00009865 InChI Key: SIALOQYKFQEKOG-UHFFFAOYSA-N PubChem CID: 66389 IUPAC Name: ethyl 3,3-diethoxypropanoate SMILES: CCOC(CC(=O)OCC)OCC
| PubChem CID | 66389 |
|---|---|
| CAS | 10601-80-6 |
| Molecular Weight (g/mol) | 190.239 |
| MDL Number | MFCD00009865 |
| SMILES | CCOC(CC(=O)OCC)OCC |
| IUPAC Name | ethyl 3,3-diethoxypropanoate |
| InChI Key | SIALOQYKFQEKOG-UHFFFAOYSA-N |
| Molecular Formula | C9H18O4 |
Hafnium(IV) 2,4-pentanedionate, 97%
CAS: 17475-67-1 Molecular Formula: C20H28HfO8 Molecular Weight (g/mol): 574.92 MDL Number: MFCD00044997 InChI Key: GXNMJQUZCICHBX-UHFFFAOYSA-N Synonym: hafnium iv acetylacetonate,hafnium-2,4-pentanedionate,hafnium; z-4-hydroxypent-3-en-2-one,3z-4-tris 2z-4-oxopent-2-en-2-yl oxy hafnio oxy pent-3-en-2-one PubChem CID: 11330624 IUPAC Name: hafnium;(Z)-4-hydroxypent-3-en-2-one SMILES: [Hf+4].CC(=O)[CH-]C(C)=O.CC(=O)[CH-]C(C)=O.CC(=O)[CH-]C(C)=O.CC(=O)[CH-]C(C)=O
| PubChem CID | 11330624 |
|---|---|
| CAS | 17475-67-1 |
| Molecular Weight (g/mol) | 574.92 |
| MDL Number | MFCD00044997 |
| SMILES | [Hf+4].CC(=O)[CH-]C(C)=O.CC(=O)[CH-]C(C)=O.CC(=O)[CH-]C(C)=O.CC(=O)[CH-]C(C)=O |
| Synonym | hafnium iv acetylacetonate,hafnium-2,4-pentanedionate,hafnium; z-4-hydroxypent-3-en-2-one,3z-4-tris 2z-4-oxopent-2-en-2-yl oxy hafnio oxy pent-3-en-2-one |
| IUPAC Name | hafnium;(Z)-4-hydroxypent-3-en-2-one |
| InChI Key | GXNMJQUZCICHBX-UHFFFAOYSA-N |
| Molecular Formula | C20H28HfO8 |
2-Chloro-2,2-difluoroacetophenone, 96%
CAS: 384-67-8 Molecular Formula: C8H5ClF2O Molecular Weight (g/mol): 190.574 MDL Number: MFCD00042123 InChI Key: MNOONJNILVDLSW-UHFFFAOYSA-N Synonym: 2-chloro-2,2-difluoroacetophenone,chlorodifluoroacetophenone,2,2,2-chlorodifluoroacetophenone,2-chloro-2,2-difluoro-1-phenylethan-1-one,ethanone, 2-chloro-2,2-difluoro-1-phenyl,zlchem 965,chlorodifluroacetophenone,acmc-1bn70,ksc226m9l,chlorodifluoromethyl phenyl ketone PubChem CID: 238296 IUPAC Name: 2-chloro-2,2-difluoro-1-phenylethanone SMILES: C1=CC=C(C=C1)C(=O)C(F)(F)Cl
| PubChem CID | 238296 |
|---|---|
| CAS | 384-67-8 |
| Molecular Weight (g/mol) | 190.574 |
| MDL Number | MFCD00042123 |
| SMILES | C1=CC=C(C=C1)C(=O)C(F)(F)Cl |
| Synonym | 2-chloro-2,2-difluoroacetophenone,chlorodifluoroacetophenone,2,2,2-chlorodifluoroacetophenone,2-chloro-2,2-difluoro-1-phenylethan-1-one,ethanone, 2-chloro-2,2-difluoro-1-phenyl,zlchem 965,chlorodifluroacetophenone,acmc-1bn70,ksc226m9l,chlorodifluoromethyl phenyl ketone |
| IUPAC Name | 2-chloro-2,2-difluoro-1-phenylethanone |
| InChI Key | MNOONJNILVDLSW-UHFFFAOYSA-N |
| Molecular Formula | C8H5ClF2O |
2-Chloromethyl-3,4-dimethoxypyridine hydrochloride, 97%, Thermo Scientific Chemicals
CAS: 72830-09-2 Molecular Formula: C8H11Cl2NO2 Molecular Weight (g/mol): 224.081 MDL Number: MFCD02181083 InChI Key: YYRIKJFWBIEEDH-UHFFFAOYSA-N Synonym: 2-chloromethyl-3,4-dimethoxypyridine hydrochloride,2-chloromethyl-3,4-dimethoxy pyridine hydrochloride,2-chloromethyl-3,4-dimethoxypyridinium chloride,2-chloromethyl-3,4-dimethoxypyridinium hydrochloride,2-chloromethyl-3 pound not4-dimethoxy-pyridine hydrochloride,2-chloromethyl-3,4-dimethoxy pyridine hcl,3,4-dimethoxy-2-chloromethylpyridine hydrochloride,2-chloromethyl-3,4-dimethoxypyridine;hydrochloride,2-chloromethyl-3,4-dimethoxy-pyridine hydrochloride PubChem CID: 16216928 IUPAC Name: 2-(chloromethyl)-3,4-dimethoxypyridine;hydrochloride SMILES: COC1=C(C(=NC=C1)CCl)OC.Cl
| PubChem CID | 16216928 |
|---|---|
| CAS | 72830-09-2 |
| Molecular Weight (g/mol) | 224.081 |
| MDL Number | MFCD02181083 |
| SMILES | COC1=C(C(=NC=C1)CCl)OC.Cl |
| Synonym | 2-chloromethyl-3,4-dimethoxypyridine hydrochloride,2-chloromethyl-3,4-dimethoxy pyridine hydrochloride,2-chloromethyl-3,4-dimethoxypyridinium chloride,2-chloromethyl-3,4-dimethoxypyridinium hydrochloride,2-chloromethyl-3 pound not4-dimethoxy-pyridine hydrochloride,2-chloromethyl-3,4-dimethoxy pyridine hcl,3,4-dimethoxy-2-chloromethylpyridine hydrochloride,2-chloromethyl-3,4-dimethoxypyridine;hydrochloride,2-chloromethyl-3,4-dimethoxy-pyridine hydrochloride |
| IUPAC Name | 2-(chloromethyl)-3,4-dimethoxypyridine;hydrochloride |
| InChI Key | YYRIKJFWBIEEDH-UHFFFAOYSA-N |
| Molecular Formula | C8H11Cl2NO2 |
Ethyl 2-oxocyclohexanecarboxylate, 95%
CAS: 1655-07-8 Molecular Formula: C9H14O3 Molecular Weight (g/mol): 170.21 MDL Number: MFCD00001631 InChI Key: FGSGHBPKHFDJOP-UHFFFAOYNA-N Synonym: ethyl 2-oxocyclohexanecarboxylate,ethyl 2-cyclohexanonecarboxylate,2-carbethoxycyclohexanone,ethyl cyclohexanone-2-carboxylate,cyclohexanecarboxylic acid, 2-oxo-, ethyl ester,2-ethoxycarbonyl cyclohexanone,2-cyclohexanonecarboxylic acid ethyl ester,2-oxocyclohexanecarboxylic acid ethyl ester,ethyl 2-oxo-1-cyclohexanecarboxylate,ethyl 2-oxocylohexanecarboxylate PubChem CID: 95543 IUPAC Name: ethyl 2-oxocyclohexane-1-carboxylate SMILES: CCOC(=O)C1CCCCC1=O
| PubChem CID | 95543 |
|---|---|
| CAS | 1655-07-8 |
| Molecular Weight (g/mol) | 170.21 |
| MDL Number | MFCD00001631 |
| SMILES | CCOC(=O)C1CCCCC1=O |
| Synonym | ethyl 2-oxocyclohexanecarboxylate,ethyl 2-cyclohexanonecarboxylate,2-carbethoxycyclohexanone,ethyl cyclohexanone-2-carboxylate,cyclohexanecarboxylic acid, 2-oxo-, ethyl ester,2-ethoxycarbonyl cyclohexanone,2-cyclohexanonecarboxylic acid ethyl ester,2-oxocyclohexanecarboxylic acid ethyl ester,ethyl 2-oxo-1-cyclohexanecarboxylate,ethyl 2-oxocylohexanecarboxylate |
| IUPAC Name | ethyl 2-oxocyclohexane-1-carboxylate |
| InChI Key | FGSGHBPKHFDJOP-UHFFFAOYNA-N |
| Molecular Formula | C9H14O3 |
3,4-Dimethoxythiophene, 98%
CAS: 51792-34-8 Molecular Formula: C6H8O2S Molecular Weight (g/mol): 144.188 MDL Number: MFCD01096546 InChI Key: ZUDCKLVMBAXBIF-UHFFFAOYSA-N Synonym: 3,4-dimethoxy thiophene,thiophene, 3,4-dimethoxy,pubchem15752,3,4-dimethoxy-thiophene,acmc-209kw1,ksc491i4n,3,4-dimethoxythiophene PubChem CID: 3613501 IUPAC Name: 3,4-dimethoxythiophene SMILES: COC1=CSC=C1OC
| PubChem CID | 3613501 |
|---|---|
| CAS | 51792-34-8 |
| Molecular Weight (g/mol) | 144.188 |
| MDL Number | MFCD01096546 |
| SMILES | COC1=CSC=C1OC |
| Synonym | 3,4-dimethoxy thiophene,thiophene, 3,4-dimethoxy,pubchem15752,3,4-dimethoxy-thiophene,acmc-209kw1,ksc491i4n,3,4-dimethoxythiophene |
| IUPAC Name | 3,4-dimethoxythiophene |
| InChI Key | ZUDCKLVMBAXBIF-UHFFFAOYSA-N |
| Molecular Formula | C6H8O2S |
4'-Bromo-2,2,2-trifluoroacetophenone, 97%
CAS: 16184-89-7 Molecular Formula: C8H4BrF3O Molecular Weight (g/mol): 253.018 MDL Number: MFCD00191862 InChI Key: IHGSAQHSAGRWNI-UHFFFAOYSA-N Synonym: 4'-bromo-2,2,2-trifluoroacetophenone,1-4-bromophenyl-2,2,2-trifluoroethanone,1-4-bromophenyl-2,2,2-trifluoroethan-1-one,1-4-bromo-phenyl-2,2,2-trifluoro-ethanone,ethanone, 1-4-bromophenyl-2,2,2-trifluoro,1-4-bromophenyl-2,2,2-trifluoro-1-ethanone,intermediates-zcf02216,4-trifluoroacetylbromobenzene,4'-bromo-2,2,2-trifluoracetophenone,4'-bromo-2,2,2-trifluoroaceto-phenone PubChem CID: 603866 IUPAC Name: 1-(4-bromophenyl)-2,2,2-trifluoroethanone SMILES: C1=CC(=CC=C1C(=O)C(F)(F)F)Br
| PubChem CID | 603866 |
|---|---|
| CAS | 16184-89-7 |
| Molecular Weight (g/mol) | 253.018 |
| MDL Number | MFCD00191862 |
| SMILES | C1=CC(=CC=C1C(=O)C(F)(F)F)Br |
| Synonym | 4'-bromo-2,2,2-trifluoroacetophenone,1-4-bromophenyl-2,2,2-trifluoroethanone,1-4-bromophenyl-2,2,2-trifluoroethan-1-one,1-4-bromo-phenyl-2,2,2-trifluoro-ethanone,ethanone, 1-4-bromophenyl-2,2,2-trifluoro,1-4-bromophenyl-2,2,2-trifluoro-1-ethanone,intermediates-zcf02216,4-trifluoroacetylbromobenzene,4'-bromo-2,2,2-trifluoracetophenone,4'-bromo-2,2,2-trifluoroaceto-phenone |
| IUPAC Name | 1-(4-bromophenyl)-2,2,2-trifluoroethanone |
| InChI Key | IHGSAQHSAGRWNI-UHFFFAOYSA-N |
| Molecular Formula | C8H4BrF3O |
3-Carboxybenzaldehyde, 97%
CAS: 619-21-6 Molecular Formula: C8H6O3 Molecular Weight (g/mol): 150.133 MDL Number: MFCD00039575 InChI Key: UHDNUPHSDMOGCR-UHFFFAOYSA-N Synonym: 3-carboxybenzaldehyde,benzoic acid, 3-formyl,m-formyl benzoic acid,3-formyl benzoic acid,3-formyl-benzoic acid,unii-hb95grm95d,m-carboxybenzaldehyde,hb95grm95d,3-formylbenzoicacid,isophthalaldehydsaure PubChem CID: 12077 IUPAC Name: 3-formylbenzoic acid SMILES: C1=CC(=CC(=C1)C(=O)O)C=O
| PubChem CID | 12077 |
|---|---|
| CAS | 619-21-6 |
| Molecular Weight (g/mol) | 150.133 |
| MDL Number | MFCD00039575 |
| SMILES | C1=CC(=CC(=C1)C(=O)O)C=O |
| Synonym | 3-carboxybenzaldehyde,benzoic acid, 3-formyl,m-formyl benzoic acid,3-formyl benzoic acid,3-formyl-benzoic acid,unii-hb95grm95d,m-carboxybenzaldehyde,hb95grm95d,3-formylbenzoicacid,isophthalaldehydsaure |
| IUPAC Name | 3-formylbenzoic acid |
| InChI Key | UHDNUPHSDMOGCR-UHFFFAOYSA-N |
| Molecular Formula | C8H6O3 |
4-(pyrid-2-yloxy)benzaldehyde, 97%, Thermo Scientific™
CAS: 194017-69-1 Molecular Formula: C12H9NO2 Molecular Weight (g/mol): 199.209 InChI Key: DPRZACGKYIDYCK-UHFFFAOYSA-N Synonym: 4-pyridin-2-yloxy benzaldehyde,4-pyrid-2-yloxy benzaldehyde,4-2-pyridyloxy benzaldehyde,benzaldehyde,4-2-pyridinyloxy,4-2-pyridinyloxy benzaldehyde,4-2-pyridinyloxy-benzaldehyde,4-pyridin-2-yloxy-benzaldehyde,4-2-pyridyloxy phenyl formaldehyde PubChem CID: 3755292 IUPAC Name: 4-pyridin-2-yloxybenzaldehyde SMILES: C1=CC=NC(=C1)OC2=CC=C(C=C2)C=O
| PubChem CID | 3755292 |
|---|---|
| CAS | 194017-69-1 |
| Molecular Weight (g/mol) | 199.209 |
| SMILES | C1=CC=NC(=C1)OC2=CC=C(C=C2)C=O |
| Synonym | 4-pyridin-2-yloxy benzaldehyde,4-pyrid-2-yloxy benzaldehyde,4-2-pyridyloxy benzaldehyde,benzaldehyde,4-2-pyridinyloxy,4-2-pyridinyloxy benzaldehyde,4-2-pyridinyloxy-benzaldehyde,4-pyridin-2-yloxy-benzaldehyde,4-2-pyridyloxy phenyl formaldehyde |
| IUPAC Name | 4-pyridin-2-yloxybenzaldehyde |
| InChI Key | DPRZACGKYIDYCK-UHFFFAOYSA-N |
| Molecular Formula | C12H9NO2 |
2-Methoxyethanol, ACS, 99.3+%
CAS: 109-86-4 Molecular Formula: C3H8O2 Molecular Weight (g/mol): 76.095 MDL Number: MFCD00002867 InChI Key: XNWFRZJHXBZDAG-UHFFFAOYSA-N Synonym: methyl cellosolve,ethanol, 2-methoxy,ethylene glycol monomethyl ether,methyl oxitol,2-methoxy-1-ethanol,methoxyethanol,3-oxa-1-butanol,egme,monomethyl glycol,dowanol em PubChem CID: 8019 ChEBI: CHEBI:46790 IUPAC Name: 2-methoxyethanol SMILES: COCCO
| PubChem CID | 8019 |
|---|---|
| CAS | 109-86-4 |
| Molecular Weight (g/mol) | 76.095 |
| ChEBI | CHEBI:46790 |
| MDL Number | MFCD00002867 |
| SMILES | COCCO |
| Synonym | methyl cellosolve,ethanol, 2-methoxy,ethylene glycol monomethyl ether,methyl oxitol,2-methoxy-1-ethanol,methoxyethanol,3-oxa-1-butanol,egme,monomethyl glycol,dowanol em |
| IUPAC Name | 2-methoxyethanol |
| InChI Key | XNWFRZJHXBZDAG-UHFFFAOYSA-N |
| Molecular Formula | C3H8O2 |
Mesityl Oxide, Certified Reference Material, MilliporeSigma™ Supelco™
Pharmaceutical secondary standards for application in quality control. Provides pharma laboratories and manufacturers with a convenient, and cost-effective alternative to the preparation of in-house working standards.