| 1 |  sigmaaldrich.com | Science and Education > Chemistry | = | 00:02:51 | 2.84 | 49.49% |
| 2 |  rsc.org | Science and Education > Chemistry | = | 00:03:21 | 4.70 | 22.64% |
| 3 |  fishersci.com | Science and Education > Chemistry | 1 | 00:03:04 | 3.82 | 50.92% |
| 4 |  ptable.com | Science and Education > Chemistry | 1 | 00:01:10 | 2.25 | 46.93% |
| 5 |  chemicalbook.com | Science and Education > Chemistry | 2 | 00:02:37 | 3.30 | 51.89% |
| 6 |  cas.org | Science and Education > Chemistry | = | 00:07:31 | 10.48 | 21.02% |
| 7 |  thermofisher.cn | Science and Education > Chemistry | 5 | 00:01:44 | 4.94 | 31.67% |
| 8 |  tcichemicals.com | Science and Education > Chemistry | 1 | 00:03:40 | 3.27 | 46.98% |
| 9 |  eurofins.com | Science and Education > Chemistry | 1 | 00:03:04 | 3.47 | 39.97% |
| 10 |  x-mol.com | Science and Education > Chemistry | 2 | 00:04:07 | 5.19 | 32.28% |
| 11 |  vwr.com | Science and Education > Chemistry | = | 00:03:07 | 4.76 | 34.92% |
| 12 |  sciencenotes.org | Science and Education > Chemistry | 2 | 00:01:10 | 1.74 | 59.35% |
| 13 |  antpedia.com | Science and Education > Chemistry | 4 | 00:01:20 | 2.34 | 49.59% |
| 14 |  merckmillipore.com | Science and Education > Chemistry | 1 | 00:02:18 | 2.56 | 42.21% |
| 15 |  masterorganicchemistry.com | Science and Education > Chemistry | = | 00:02:45 | 2.97 | 50.48% |
| 16 |  grail.moe | Science and Education > Chemistry | 54 | 00:06:27 | 9.85 | 28.02% |
| 17 |  carlroth.com | Science and Education > Chemistry | 1 | 00:01:41 | 2.35 | 52.08% |
| 18 |  fz-juelich.de | Science and Education > Chemistry | 1 | 00:04:26 | 4.47 | 38% |
| 19 |  chemistryworld.com | Science and Education > Chemistry | 3 | 00:00:42 | 1.52 | 55.85% |
| 20 |  aist.go.jp | Science and Education > Chemistry | 2 | 00:01:56 | 3.72 | 52.25% |
| 21 |  aceacademy.lk | Science and Education > Chemistry | 4 | 00:10:15 | 6.14 | 25.61% |
| 22 |  muctr.ru | Science and Education > Chemistry | 10 | 00:10:57 | 5.39 | 30.1% |
| 23 |  chemrxiv.org | Science and Education > Chemistry | = | 00:06:44 | 5.44 | 37.36% |
| 24 |  instrument.com.cn | Science and Education > Chemistry | 1 | 00:01:24 | 2.95 | 50.2% |
| 25 |  waters.com | Science and Education > Chemistry | 5 | 00:02:22 | 2.46 | 45.9% |
| 26 |  aktiv.com | Science and Education > Chemistry | 43 | 00:12:25 | 14.06 | 14.3% |
| 27 |  sartorius.com | Science and Education > Chemistry | 2 | 00:01:57 | 3.14 | 42.69% |
| 28 |  chemistry.com.pk | Science and Education > Chemistry | 28 | 00:00:55 | 2.20 | 50.53% |
| 29 |  chemistrysteps.com | Science and Education > Chemistry | 6 | 00:01:04 | 2.20 | 45.83% |
| 30 |  organic-chemistry.org | Science and Education > Chemistry | 2 | 00:01:35 | 2.20 | 51.91% |
| 31 |  bldpharm.com | Science and Education > Chemistry | 9 | 00:02:57 | 3.29 | 40.37% |
| 32 |  shimadzu.co.jp | Science and Education > Chemistry | 11 | 00:03:00 | 3.45 | 46.17% |
| 33 |  bruker.com | Science and Education > Chemistry | 6 | 00:01:25 | 2.61 | 47.66% |
| 34 |  chemspider.com | Science and Education > Chemistry | 4 | 00:01:15 | 1.83 | 46.92% |
| 35 |  sciopen.com | Science and Education > Chemistry | 1 | 00:01:00 | 1.78 | 53.55% |
| 36 |  visioneschool.com | Science and Education > Chemistry | 71 | 00:13:06 | 12.32 | 11.69% |
| 37 |  iupac.org | Science and Education > Chemistry | 8 | 00:00:49 | 2.23 | 41.77% |
| 38 |  webqc.org | Science and Education > Chemistry | = | 00:01:02 | 1.91 | 48.27% |
| 39 |  anrfonline.in | Science and Education > Chemistry | 15 | 00:05:07 | 4.36 | 36.21% |
| 40 |  stepenin.ru | Science and Education > Chemistry | 14 | 00:08:08 | 8.21 | 41.14% |
| 41 |  nitech.ac.jp | Science and Education > Chemistry | 8 | 00:04:43 | 4.96 | 32.92% |
| 42 |  chemguide.co.uk | Science and Education > Chemistry | 8 | 00:00:38 | 1.70 | 46.51% |
| 43 |  krict.re.kr | Science and Education > Chemistry | 3 | 00:11:57 | 6.49 | 18.67% |
| 44 |  benchchem.com | Science and Education > Chemistry | 5 | 00:01:14 | 1.65 | 49.61% |
| 45 |  reaxys.com | Science and Education > Chemistry | 2 | 00:07:59 | 16.20 | 14.53% |
| 46 |  chemicalaid.com | Science and Education > Chemistry | 4 | 00:01:10 | 2.24 | 42.75% |
| 47 |  fishersci.co.uk | Science and Education > Chemistry | 4 | 00:01:48 | 3.64 | 41.26% |
| 48 |  labx.com | Science and Education > Chemistry | = | 00:00:59 | 2.43 | 46.8% |
| 49 |  chem-station.com | Science and Education > Chemistry | 8 | 00:03:12 | 2.20 | 58.67% |
| 50 |  hitachi-hightech.com | Science and Education > Chemistry | 13 | 00:02:36 | 3.20 | 46.58% |
