{"id":49522,"date":"2024-06-03T10:19:34","date_gmt":"2024-06-03T02:19:34","guid":{"rendered":"http:\/\/www.newtopchem.com\/archives\/49522"},"modified":"2024-06-03T10:19:34","modified_gmt":"2024-06-03T02:19:34","slug":"7-hydroxycoumarin","status":"publish","type":"post","link":"http:\/\/www.newtopchem.com\/archives\/49522","title":{"rendered":"7-Hydroxycoumarin","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

$\"7-hydroxycoumarin$ <\/p>\n

Structural formula<\/p>\n\n\n\n\n\n\n\n
Business number<\/th>\n 0265<\/td>\n<\/tr>\n
Molecular formula<\/th>\n C9H6O3<\/td>\n<\/tr>\n
Molecular weight<\/th>\n 162.14<\/td>\n<\/tr>\n
label<\/th>\n \n
7-hydroxy-2H-1-benzopyran-2-one,<\/p>\n
7-Hydroxy-2H-1-benzopyran-2-one,<\/p>\n
Butylidene-4,5-dihydro-3H-isobenzofuran-1-one<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n
Numbering system<\/a><\/li>\n
Physical property data<\/a><\/li>\n
Toxicological data<\/a><\/li>\n
Ecological data<\/a><\/li>\n
Molecular structure data<\/a><\/li>\n
Computing chemical data<\/a><\/li>\n
\n More <\/span><\/a><\/p>\n
\n
Properties and Stability<\/a><\/li>\n
Storage method<\/a><\/li>\n
Synthesis method<\/a><\/li>\n
Purpose<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
Numbering system<\/h2>\n
CAS number:<\/b>93-35-6<\/p>\n
MDL number:<\/b>MFCD00006878<\/p>\n
EINECS number:<\/b>202-240-3<\/p>\n
RTECS number:<\/b>GN6820000<\/p>\n
BRN number:<\/b>127683<\/p>\n
PubChem number:<\/b>24889947<\/p>\n
Physical property data<\/h2>\n
\n
<\/P>
\n
1. <\/SPAN> <\/SPAN><\/SPAN>Characteristics: white needle-like crystals. It smells of coumarin when heated. Can be sublimated. <\/SPAN><\/SPAN><\/P>
\n
2. <\/SPAN> <\/SPAN><\/SPAN>Density (<\/SPAN>g\/mL,25\/4<\/SPAN>\u2103)\uff1a<\/SPAN> <\/SPAN><\/SPAN><\/P>
\n
3. <\/SPAN><\/SPAN> <\/SPAN>Relative vapor density (<\/SPAN>g \/mL,<\/SPAN>AIR<\/SPAN>= 1<\/SPAN>): Undetermined<\/SPAN> <\/SPAN><\/P>
\n
4. <\/SPAN> <\/SPAN><\/SPAN>Melting point (<\/SPAN>\u00baC<\/SPAN>): <\/SPAN>225 -228<\/SPAN>\u2103\uff08<\/SPAN>230 -232<\/SPAN>\u2103). <\/SPAN> <\/SPAN><\/P>
\n
5. <\/SPAN> <\/SPAN><\/SPAN>Boiling point (<\/SPAN>\u00baC,<\/SPAN>Normal pressure): Undetermined<\/SPAN> <\/SPAN><\/SPAN><\/P>
\n
6. <\/SPAN> <\/SPAN><\/SPAN>Boiling point (<\/SPAN>\u00baC,0.4kPa<\/SPAN>):<\/SPAN> <\/SPAN>Undetermined<\/SPAN><\/SPAN><\/P>
\n
7. <\/SPAN> <\/SPAN><\/SPAN>Refractive index: undetermined<\/SPAN><\/SPAN><\/P>
\n
8. <\/SPAN> <\/SPAN><\/SPAN>Flashpoint (<\/SPAN>\u00baC<\/SPAN>): <\/SPAN> <\/SPAN>Undetermined<\/SPAN><\/SPAN><\/P>
\n
9. <\/SPAN> <\/SPAN><\/SPAN>Specific optical rotation (<\/SPAN>\u00ba<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P>
\n
10. <\/SPAN> <\/SPAN><\/SPAN>Autoignition point or ignition temperature (<\/SPAN>\u00baC<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P>
\n
11. <\/SPAN> <\/SPAN><\/SPAN>Vapor pressure (<\/SPAN>kPa,25\u00baC<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P>
\n
12. <\/SPAN> <\/SPAN><\/SPAN>Saturated vapor pressure (<\/SPAN>kPa,60\u00baC<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P>
\n
13. <\/SPAN> <\/SPAN><\/SPAN>Heat of combustion (<\/SPAN>KJ\/mol<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P>
\n
14. <\/SPAN> <\/SPAN><\/SPAN>Critical temperature (<\/SPAN>\u00baC<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P>
\n
15. <\/SPAN> <\/SPAN><\/SPAN>Critical pressure (<\/SPAN>KPa<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P>
\n
16. <\/SPAN><\/SPAN><\/SPAN>Oil and water (octanol<\/SPAN>\/<\/SPAN>Log value of the partition coefficient (water): undetermined<\/SPAN><\/SPAN><\/P>
\n
17. <\/SPAN> <\/SPAN><\/SPAN>Explosion limit (<\/SPAN>%,V\/V<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P>
\n
18. <\/SPAN> <\/SPAN><\/SPAN>Lower explosion limit (<\/SPAN>%,V\/V<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P>
\n
19. <\/SPAN> <\/SPAN><\/SPAN>Solubility:<\/SPAN>1g<\/SPAN>Product dissolves in approximately<\/SPAN>100ml<\/SPAN>Boiling water, easily soluble in ethanol, chloroform, acetic acid, soluble in dilute alkali, slightly soluble in ether. The solution shows blue fluorescence. <\/SPAN><\/SPAN> <\/P>
\n
<\/SPAN><\/SPAN><\/P>
\n
<\/P>\n <\/p>\n
Toxicological data<\/h2>\n
\n None\n <\/p>\n
Ecological data<\/h2>\n
\n None\n <\/p>\n
Molecular structure data<\/h2>\n
\n
1. <\/SPAN><\/SPAN><\/SPAN>Molar refractive index:<\/SPAN>41.64<\/SPAN><\/SPAN> <\/P>
\n
2. <\/SPAN><\/SPAN><\/SPAN>Molar volume (<\/SPAN>m^{3<\/SUP>\/mol<\/SPAN>):<\/SPAN>115.5<\/SPAN><\/SPAN><\/P>
\n}
3. <\/SPAN><\/SPAN><\/SPAN>Isotonic specific volume (<\/SPAN>90.2K<\/SPAN>):<\/SPAN>320.8<\/SPAN><\/SPAN><\/P>
\n
4. <\/SPAN><\/SPAN><\/SPAN>Surface tension (<\/SPAN>dyne\/cm<\/SPAN>):<\/SPAN>59.4<\/SPAN><\/SPAN><\/P>
\n
5. <\/SPAN><\/SPAN><\/SPAN>Polarizability<\/SPAN>(<\/SPAN>10^{-24<\/SUP>cm^{3<\/SUP><\/SPAN>\uff09\uff1a<\/SPAN>16.51<\/SPAN><\/SPAN><\/P>\n <\/p>\n}}
Compute chemical data<\/h2>\n
1. Reference value for hydrophobic parameter calculation (XlogP): None<\/P><\/p>\n
2. Number of hydrogen bond donors: 1<\/p>\n
3. Number of hydrogen bond acceptors: 3<\/p>\n
4. Number of rotatable chemical bonds: 0<\/p>\n
5. Number of tautomers: 5<\/p>\n
6. ExtensionThe polar surface area of \u200b\u200bthe molecule is 46.5<\/p>\n
7. Number of heavy atoms: 12<\/p>\n
8. Surface charge: 0<\/p>\n
9. Complexity: 222<\/p>\n
10. Number of isotope atoms: 0<\/p>\n
11. Number of determined atomic stereocenters: 0<\/p>\n
12. Number of uncertain atomic stereocenters: 0<\/p>\n
13. Determine the number of stereocenters of chemical bonds: 0<\/p>\n
14. Uncertain number of stereocenters of chemical bonds: 0<\/p>\n
15. Number of covalent bond units: 1<\/p>\n<\/p>\n
Properties and stability<\/h2>\n
\n None\n <\/p>\n
Storage method<\/h2>\n
\n
This product should be stored in a sealed, cool and dry place. <\/SPAN><\/SPAN><\/P>\n <\/p>\n
Synthesis method<\/h2>\n
\n By<\/SPAN>2<\/SPAN>,<\/SPAN>4-<\/SPAN>Dihydroxyacetophenone and malic acid in the presence of sulfuric acid<\/SPAN>90-130<\/SPAN>\u2103 Condensation removes the acetyl group to obtain umbelliferone. <\/SPAN>\n <\/p>\n
Purpose<\/h2>\n
\n
Used as fluorescent indicator and acid-base indicator (<\/SPAN>pH<\/SPAN>for<\/SPAN>6.5-8.0<\/SPAN>). <\/SPAN><\/SPAN><\/P>\n <\/p>\n
extended-reading:https:\/\/www.bdmaee.net\/dioctyltin-oxide-2\/<\/a><\/br>extended-reading:https:\/\/www.bdmaee.net\/nn-dimethylpropylamine\/<\/a><\/br>extended-reading:https:\/\/www.newtopchem.com\/archives\/category\/products\/adhesive-catalyst<\/a><\/br>extended-reading:https:\/\/www.newtopchem.com\/archives\/1750<\/a><\/br>extended-reading:https:\/\/www.bdmaee.net\/wp-content\/uploads\/2022\/08\/Tributyltin-chloride-CAS1461-22-9-tri-n-butyltin-chloride.pdf<\/a><\/br>extended-reading:https:\/\/www.bdmaee.net\/lupragen-n205\/<\/a><\/br>extended-reading:https:\/\/www.cyclohexylamine.net\/dabco-blx-11-polyurethane-foaming-catalyst\/<\/a><\/br>extended-reading:https:\/\/www.newtopchem.com\/archives\/1902<\/a><\/br>extended-reading:https:\/\/www.newtopchem.com\/archives\/957<\/a><\/br>extended-reading:https:\/\/www.bdmaee.net\/wp-content\/uploads\/2021\/05\/2-2.jpg<\/a><\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"
Structural formula Business number 0265 Molecular formu…<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":49521,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[15499],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/posts\/49522"}],"collection":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/comments?post=49522"}],"version-history":[{"count":0,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/posts\/49522\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/media\/49521"}],"wp:attachment":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/media?parent=49522"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/categories?post=49522"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/tags?post=49522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

Business number<\/th>\n	0265<\/td>\n<\/tr>\n
Molecular formula<\/th>\n	C9H6O3<\/td>\n<\/tr>\n
Molecular weight<\/th>\n	162.14<\/td>\n<\/tr>\n
label<\/th>\n	\n 7-hydroxy-2H-1-benzopyran-2-one,<\/p>\n 7-Hydroxy-2H-1-benzopyran-2-one,<\/p>\n Butylidene-4,5-dihydro-3H-isobenzofuran-1-one<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \n Numbering system<\/a><\/li>\n Physical property data<\/a><\/li>\n Toxicological data<\/a><\/li>\n Ecological data<\/a><\/li>\n Molecular structure data<\/a><\/li>\n Computing chemical data<\/a><\/li>\n \n More <\/span><\/a><\/p>\n \n Properties and Stability<\/a><\/li>\n Storage method<\/a><\/li>\n Synthesis method<\/a><\/li>\n Purpose<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n Numbering system<\/h2>\n CAS number:<\/b>93-35-6<\/p>\n MDL number:<\/b>MFCD00006878<\/p>\n EINECS number:<\/b>202-240-3<\/p>\n RTECS number:<\/b>GN6820000<\/p>\n BRN number:<\/b>127683<\/p>\n PubChem number:<\/b>24889947<\/p>\n Physical property data<\/h2>\n \n <\/P> \n 1. <\/SPAN> <\/SPAN><\/SPAN>Characteristics: white needle-like crystals. It smells of coumarin when heated. Can be sublimated. <\/SPAN><\/SPAN><\/P> \n 2. <\/SPAN> <\/SPAN><\/SPAN>Density (<\/SPAN>g\/mL,25\/4<\/SPAN>\u2103)\uff1a<\/SPAN> <\/SPAN><\/SPAN><\/P> \n 3. <\/SPAN><\/SPAN> <\/SPAN>Relative vapor density (<\/SPAN>g \/mL,<\/SPAN>AIR<\/SPAN>= 1<\/SPAN>): Undetermined<\/SPAN> <\/SPAN><\/P> \n 4. <\/SPAN> <\/SPAN><\/SPAN>Melting point (<\/SPAN>\u00baC<\/SPAN>): <\/SPAN>225 -228<\/SPAN>\u2103\uff08<\/SPAN>230 -232<\/SPAN>\u2103). <\/SPAN> <\/SPAN><\/P> \n 5. <\/SPAN> <\/SPAN><\/SPAN>Boiling point (<\/SPAN>\u00baC,<\/SPAN>Normal pressure): Undetermined<\/SPAN> <\/SPAN><\/SPAN><\/P> \n 6. <\/SPAN> <\/SPAN><\/SPAN>Boiling point (<\/SPAN>\u00baC,0.4kPa<\/SPAN>):<\/SPAN> <\/SPAN>Undetermined<\/SPAN><\/SPAN><\/P> \n 7. <\/SPAN> <\/SPAN><\/SPAN>Refractive index: undetermined<\/SPAN><\/SPAN><\/P> \n 8. <\/SPAN> <\/SPAN><\/SPAN>Flashpoint (<\/SPAN>\u00baC<\/SPAN>): <\/SPAN> <\/SPAN>Undetermined<\/SPAN><\/SPAN><\/P> \n 9. <\/SPAN> <\/SPAN><\/SPAN>Specific optical rotation (<\/SPAN>\u00ba<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P> \n 10. <\/SPAN> <\/SPAN><\/SPAN>Autoignition point or ignition temperature (<\/SPAN>\u00baC<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P> \n 11. <\/SPAN> <\/SPAN><\/SPAN>Vapor pressure (<\/SPAN>kPa,25\u00baC<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P> \n 12. <\/SPAN> <\/SPAN><\/SPAN>Saturated vapor pressure (<\/SPAN>kPa,60\u00baC<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P> \n 13. <\/SPAN> <\/SPAN><\/SPAN>Heat of combustion (<\/SPAN>KJ\/mol<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P> \n 14. <\/SPAN> <\/SPAN><\/SPAN>Critical temperature (<\/SPAN>\u00baC<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P> \n 15. <\/SPAN> <\/SPAN><\/SPAN>Critical pressure (<\/SPAN>KPa<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P> \n 16. <\/SPAN><\/SPAN><\/SPAN>Oil and water (octanol<\/SPAN>\/<\/SPAN>Log value of the partition coefficient (water): undetermined<\/SPAN><\/SPAN><\/P> \n 17. <\/SPAN> <\/SPAN><\/SPAN>Explosion limit (<\/SPAN>%,V\/V<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P> \n 18. <\/SPAN> <\/SPAN><\/SPAN>Lower explosion limit (<\/SPAN>%,V\/V<\/SPAN>): Undetermined<\/SPAN><\/SPAN><\/P> \n 19. <\/SPAN> <\/SPAN><\/SPAN>Solubility:<\/SPAN>1g<\/SPAN>Product dissolves in approximately<\/SPAN>100ml<\/SPAN>Boiling water, easily soluble in ethanol, chloroform, acetic acid, soluble in dilute alkali, slightly soluble in ether. The solution shows blue fluorescence. <\/SPAN><\/SPAN> <\/P> \n <\/SPAN><\/SPAN><\/P> \n <\/P>\n <\/p>\n Toxicological data<\/h2>\n \n None\n <\/p>\n Ecological data<\/h2>\n \n None\n <\/p>\n Molecular structure data<\/h2>\n \n 1. <\/SPAN><\/SPAN><\/SPAN>Molar refractive index:<\/SPAN>41.64<\/SPAN><\/SPAN> <\/P> \n 2. <\/SPAN><\/SPAN><\/SPAN>Molar volume (<\/SPAN>m^{3<\/SUP>\/mol<\/SPAN>):<\/SPAN>115.5<\/SPAN><\/SPAN><\/P> \n} 3. <\/SPAN><\/SPAN><\/SPAN>Isotonic specific volume (<\/SPAN>90.2K<\/SPAN>):<\/SPAN>320.8<\/SPAN><\/SPAN><\/P> \n 4. <\/SPAN><\/SPAN><\/SPAN>Surface tension (<\/SPAN>dyne\/cm<\/SPAN>):<\/SPAN>59.4<\/SPAN><\/SPAN><\/P> \n 5. <\/SPAN><\/SPAN><\/SPAN>Polarizability<\/SPAN>(<\/SPAN>10^{-24<\/SUP>cm^{3<\/SUP><\/SPAN>\uff09\uff1a<\/SPAN>16.51<\/SPAN><\/SPAN><\/P>\n <\/p>\n}} Compute chemical data<\/h2>\n 1. Reference value for hydrophobic parameter calculation (XlogP): None<\/P><\/p>\n 2. Number of hydrogen bond donors: 1<\/p>\n 3. Number of hydrogen bond acceptors: 3<\/p>\n 4. Number of rotatable chemical bonds: 0<\/p>\n 5. Number of tautomers: 5<\/p>\n 6. ExtensionThe polar surface area of \u200b\u200bthe molecule is 46.5<\/p>\n 7. Number of heavy atoms: 12<\/p>\n 8. Surface charge: 0<\/p>\n 9. Complexity: 222<\/p>\n 10. Number of isotope atoms: 0<\/p>\n 11. Number of determined atomic stereocenters: 0<\/p>\n 12. Number of uncertain atomic stereocenters: 0<\/p>\n 13. Determine the number of stereocenters of chemical bonds: 0<\/p>\n 14. Uncertain number of stereocenters of chemical bonds: 0<\/p>\n 15. Number of covalent bond units: 1<\/p>\n<\/p>\n Properties and stability<\/h2>\n \n None\n <\/p>\n Storage method<\/h2>\n \n This product should be stored in a sealed, cool and dry place. <\/SPAN><\/SPAN><\/P>\n <\/p>\n Synthesis method<\/h2>\n \n By<\/SPAN>2<\/SPAN>,<\/SPAN>4-<\/SPAN>Dihydroxyacetophenone and malic acid in the presence of sulfuric acid<\/SPAN>90-130<\/SPAN>\u2103 Condensation removes the acetyl group to obtain umbelliferone. <\/SPAN>\n <\/p>\n Purpose<\/h2>\n \n Used as fluorescent indicator and acid-base indicator (<\/SPAN>pH<\/SPAN>for<\/SPAN>6.5-8.0<\/SPAN>). <\/SPAN><\/SPAN><\/P>\n <\/p>\n extended-reading:https:\/\/www.bdmaee.net\/dioctyltin-oxide-2\/<\/a><\/br>extended-reading:https:\/\/www.bdmaee.net\/nn-dimethylpropylamine\/<\/a><\/br>extended-reading:https:\/\/www.newtopchem.com\/archives\/category\/products\/adhesive-catalyst<\/a><\/br>extended-reading:https:\/\/www.newtopchem.com\/archives\/1750<\/a><\/br>extended-reading:https:\/\/www.bdmaee.net\/wp-content\/uploads\/2022\/08\/Tributyltin-chloride-CAS1461-22-9-tri-n-butyltin-chloride.pdf<\/a><\/br>extended-reading:https:\/\/www.bdmaee.net\/lupragen-n205\/<\/a><\/br>extended-reading:https:\/\/www.cyclohexylamine.net\/dabco-blx-11-polyurethane-foaming-catalyst\/<\/a><\/br>extended-reading:https:\/\/www.newtopchem.com\/archives\/1902<\/a><\/br>extended-reading:https:\/\/www.newtopchem.com\/archives\/957<\/a><\/br>extended-reading:https:\/\/www.bdmaee.net\/wp-content\/uploads\/2021\/05\/2-2.jpg<\/a><\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":" Structural formula Business number 0265 Molecular formu…<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":49521,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[15499],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/posts\/49522"}],"collection":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/comments?post=49522"}],"version-history":[{"count":0,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/posts\/49522\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/media\/49521"}],"wp:attachment":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/media?parent=49522"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/categories?post=49522"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/tags?post=49522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

Numbering system<\/h2>\nCAS number:<\/b>93-35-6<\/p>\nMDL number:<\/b>MFCD00006878<\/p>\nEINECS number:<\/b>202-240-3<\/p>\nRTECS number:<\/b>GN6820000<\/p>\nBRN number:<\/b>127683<\/p>\nPubChem number:<\/b>24889947<\/p>\n

Toxicological data<\/h2>\n\n None\n <\/p>\n

Ecological data<\/h2>\n\n None\n <\/p>\n

Properties and stability<\/h2>\n\n None\n <\/p>\n

Storage method<\/h2>\n\n This product should be stored in a sealed, cool and dry place. <\/SPAN><\/SPAN><\/P>\n <\/p>\n

Synthesis method<\/h2>\n\n By<\/SPAN>2<\/SPAN>,<\/SPAN>4-<\/SPAN>Dihydroxyacetophenone and malic acid in the presence of sulfuric acid<\/SPAN>90-130<\/SPAN>\u2103 Condensation removes the acetyl group to obtain umbelliferone. <\/SPAN>\n <\/p>\n

Numbering system<\/h2>\n
CAS number:<\/b>93-35-6<\/p>\n
MDL number:<\/b>MFCD00006878<\/p>\n
EINECS number:<\/b>202-240-3<\/p>\n
RTECS number:<\/b>GN6820000<\/p>\n
BRN number:<\/b>127683<\/p>\n
PubChem number:<\/b>24889947<\/p>\n

Toxicological data<\/h2>\n
\n None\n <\/p>\n

Ecological data<\/h2>\n
\n None\n <\/p>\n

Properties and stability<\/h2>\n
\n None\n <\/p>\n

Storage method<\/h2>\n
\n
This product should be stored in a sealed, cool and dry place. <\/SPAN><\/SPAN><\/P>\n <\/p>\n

Synthesis method<\/h2>\n
\n By<\/SPAN>2<\/SPAN>,<\/SPAN>4-<\/SPAN>Dihydroxyacetophenone and malic acid in the presence of sulfuric acid<\/SPAN>90-130<\/SPAN>\u2103 Condensation removes the acetyl group to obtain umbelliferone. <\/SPAN>\n <\/p>\n