| 1 |  sigmaaldrich.com | Science and Education > Chemistry | = | 00:03:03 | 3.05 | 51.86% |
| 2 |  rsc.org | Science and Education > Chemistry | = | 00:03:03 | 4.47 | 24.11% |
| 3 |  ptable.com | Science and Education > Chemistry | 1 | 00:01:31 | 2.40 | 48.14% |
| 4 |  fishersci.com | Science and Education > Chemistry | 1 | 00:03:37 | 4.16 | 49.26% |
| 5 |  thermofisher.cn | Science and Education > Chemistry | 2 | 00:01:40 | 5.03 | 26.83% |
| 6 |  chemicalbook.com | Science and Education > Chemistry | 1 | 00:02:13 | 2.90 | 55.67% |
| 7 |  grail.moe | Science and Education > Chemistry | 9 | 00:05:51 | 7.50 | 30.72% |
| 8 |  cas.org | Science and Education > Chemistry | 2 | 00:08:11 | 10.92 | 25.12% |
| 9 |  sciencenotes.org | Science and Education > Chemistry | 3 | 00:01:04 | 1.64 | 60.07% |
| 10 |  aktiv.com | Science and Education > Chemistry | 16 | 00:15:00 | 13.99 | 14.24% |
| 11 |  eurofins.com | Science and Education > Chemistry | 2 | 00:02:35 | 3.21 | 44.46% |
| 12 |  tcichemicals.com | Science and Education > Chemistry | 4 | 00:03:24 | 2.92 | 51.2% |
| 13 |  x-mol.com | Science and Education > Chemistry | 3 | 00:04:16 | 4.02 | 31.58% |
| 14 |  merckmillipore.com | Science and Education > Chemistry | = | 00:02:08 | 2.50 | 46.35% |
| 15 |  vwr.com | Science and Education > Chemistry | 4 | 00:03:34 | 4.58 | 38.35% |
| 16 |  masterorganicchemistry.com | Science and Education > Chemistry | 1 | 00:01:41 | 2.03 | 56.88% |
| 17 |  aceacademy.lk | Science and Education > Chemistry | 4 | 00:11:24 | 9.36 | 17.79% |
| 18 |  antpedia.com | Science and Education > Chemistry | 5 | 00:01:11 | 2.47 | 49.9% |
| 19 |  fz-juelich.de | Science and Education > Chemistry | 1 | 00:04:05 | 4.83 | 39.06% |
| 20 |  chemrxiv.org | Science and Education > Chemistry | 3 | 00:08:16 | 6.36 | 37.79% |
| 21 |  carlroth.com | Science and Education > Chemistry | 4 | 00:01:43 | 2.33 | 51.35% |
| 22 |  muctr.ru | Science and Education > Chemistry | = | 00:04:57 | 4.71 | 38.06% |
| 23 |  aist.go.jp | Science and Education > Chemistry | 3 | 00:01:59 | 3.75 | 53.98% |
| 24 |  chemistry.com.pk | Science and Education > Chemistry | 4 | 00:01:09 | 2.64 | 47.99% |
| 25 |  organic-chemistry.org | Science and Education > Chemistry | 5 | 00:01:38 | 2.07 | 55.67% |
| 26 |  stepenin.ru | Science and Education > Chemistry | 14 | 00:06:44 | 8.27 | 35.6% |
| 27 |  chemistryworld.com | Science and Education > Chemistry | 8 | 00:00:42 | 1.53 | 54.7% |
| 28 |  chemistrysteps.com | Science and Education > Chemistry | 1 | 00:00:52 | 1.59 | 50.86% |
| 29 |  instrument.com.cn | Science and Education > Chemistry | 5 | 00:01:00 | 2.21 | 54.57% |
| 30 |  chemquiz.net | Science and Education > Chemistry | 40 | 00:04:01 | 4.22 | 48.33% |
| 31 |  sartorius.com | Science and Education > Chemistry | 4 | 00:01:27 | 2.80 | 46.72% |
| 32 |  iupac.org | Science and Education > Chemistry | 5 | 00:00:57 | 2.57 | 42.84% |
| 33 |  chemicalaid.com | Science and Education > Chemistry | 13 | 00:00:49 | 2.83 | 36.52% |
| 34 |  bldpharm.com | Science and Education > Chemistry | 3 | 00:03:14 | 3.18 | 43.74% |
| 35 |  shimadzu.co.jp | Science and Education > Chemistry | 3 | 00:03:16 | 3.88 | 51.5% |
| 36 |  waters.com | Science and Education > Chemistry | 11 | 00:02:30 | 2.80 | 50.64% |
| 37 |  sciopen.com | Science and Education > Chemistry | 2 | 00:01:06 | 1.84 | 53.97% |
| 38 |  chemspider.com | Science and Education > Chemistry | 4 | 00:01:26 | 1.97 | 46.41% |
| 39 |  osmanonline.info | Science and Education > Chemistry | 22 | 00:03:43 | 3.45 | 31.7% |
| 40 |  acetyl.ru | Science and Education > Chemistry | 16 | 00:02:26 | 1.97 | 40.4% |
| 41 |  bruker.com | Science and Education > Chemistry | 8 | 00:01:27 | 2.57 | 47.78% |
| 42 |  reaxys.com | Science and Education > Chemistry | 3 | 00:06:46 | 16.43 | 14.68% |
| 43 |  aladdin-e.com | Science and Education > Chemistry | 81 | 00:01:27 | 3.42 | 35.95% |
| 44 |  anrfonline.in | Science and Education > Chemistry | 5 | 00:04:52 | 4.85 | 37.29% |
| 45 |  knowunity.de | Science and Education > Chemistry | 46 | 00:02:09 | 2.22 | 45.18% |
| 46 |  labx.com | Science and Education > Chemistry | 2 | 00:01:02 | 2.88 | 44.69% |
| 47 |  chemguide.co.uk | Science and Education > Chemistry | 5 | 00:01:06 | 2.32 | 47.12% |
| 48 |  compoundchem.com | Science and Education > Chemistry | 6 | 00:00:32 | 1.43 | 61.48% |
| 49 |  fishersci.co.uk | Science and Education > Chemistry | 2 | 00:01:58 | 3.32 | 45.01% |
| 50 |  chemtube3d.com | Science and Education > Chemistry | 24 | 00:01:14 | 2.74 | 35.77% |
