Synonym(s): caffeine; 58-08-2; 1,3,7-Trimethylxanthine; Guaranine; Thein; Methyltheobromine; Cafeina; Theine; Koffein; Mateina; Alert-pep; Caffein; Cafipel; Coffeine; Refresh'n; Caffedrine; Stim; Cafamil; Cafecon; Caffine; Dexitac; Nodaca; Anhydrous caffeine; No-Doz; Eldiatric C; 7-Methyltheophylline; Hycomine; Organex; Vivarin; Nix Nap; Methyltheobromide; Coffein; Phensal; 3,7-Dihydro-1,3,7-trimethyl-1H-purine-2,6-dione; Caffeine, synthetic; Quick-Pep; Coffeinum; Tirend; 1,3,7-Trimethyl-2,6-dioxopurine; 1,3,7-Trimethylpurine-2,6-dione; Theophylline, 7-methyl; DHCplus; Tri-Aqua; 1H-Purine-2,6-dione, 3,7-dihydro-1,3,7-trimethyl-; Kofein; Miudol; Caffeine, anhydrous; Theobromine, 1-methyl-; Propoxyphene Compound 65; 1,3,7-Trimethyl-3,7-dihydro-1H-purine-2,6-dione; Kofein [Czech]; Coffein [German]; Koffein [German]; 1-methyltheobromine; Caffeine (natural); Xanthine, 1,3,7-trimethyl; Caffeina [Italian]; Theophylline Me; Methylxanthine theophylline; Theobromine Me; NCI-C02733; SK-65 Compound; Anacin; Anacin Maximum Strength; P-A-C Analgesic Tablets; C8H10N4O2; HSDB 36; FEMA No. 2224; BRN 0017705; 1,3,7-trimethyl-2,3,6,7-tetrahydro-1H-purine-2,6-dione; NSC 5036; A.S.A. and Codeine Compound; UNII-3G6A5W338E; 1,3,7-trimethyl-1H-purine-2,6(3H,7H)-dione; AI3-20154; CHEMBL113; CFF; CHEBI:27732; 3G6A5W338E; NSC-5036; MFCD00005758; caffenium; SK 65 Compound; Caffeina; DSSTox_CID_232; Caffeine [BAN:JAN]; CAFFEINE-D3; DSSTox_RID_75448; DSSTox_GSID_20232; cafeine; peyona; teina; CAS-58-08-2; Caffeine (USP); SMR000326667; CCRIS 1314; SR-01000075187; Anhydrous caffeine (TN); EINECS 200-362-1; Monomethyl derivative of Theophylline; Caffeine [USP:BAN:JAN]; Anhydrous caffeine (JP15); Caffeine hydrous; 1gfz; Caffeine, BioXtra; TNP00310; Monohydrate Caffeine; Respia (TN); 1-methyl-Theobromine; 7-methyl Theophylline; Cafergot (Salt/Mix); 1,7-Trimethylxanthine; Spectrum_001301; 1l5q; 1l7x; 2a3b; 3g6m; 3,7-dihydro-1,3,7-trimethyl-1H-purine; Xanthine,3,7-trimethyl; Theine, methyltheobromine; Spectrum2_001261; Spectrum3_000321; Spectrum4_001782; Spectrum5_000423; Lopac-C-0750; bmse000206; MolMap_000054; Probes1_000150; Probes2_000128; C 0750; EC 200-362-1; SCHEMBL5671; Anhydrous caffeine (JP17); NCIOpen2_008255; BIDD:PXR0172; Lopac0_000228; 1, 3, 7-Trimethylxanthine; BSPBio_001921; GTPL407; KBioGR_002325; KBioSS_001781; 1,3,7-trimethyl-1,3,7-trihydropurine-2,6-dione; 5-26-13-00558 (Beilstein Handbook Reference); MLS001055341; MLS001056714; MLS001066409; BIDD:ER0554; BIDD:GT0632; DivK1c_000730; SPECTRUM1500155; CU-01000012617-3; SPBio_001222; Caffeine melting point standard; MEGxp0_001350; ZINC1084; 1,3,7-trimethyl-2,6-dioxo-1,2,3,6-tetrahydropurine; component of Dilone (Salt/Mix); DTXSID0020232; 1,7-Trimethyl-2,6-dioxopurine; ACon1_000085; BDBM10849; HMS502E12; KBio1_000730; KBio2_001781; KBio2_004349; KBio2_006917; KBio3_001141; Caffeine 1.0 mg/ml in Methanol; NSC5036; Caffeine, powder, ReagentPlus(R); component of Percodan (Salt/Mix); NINDS_000730; Bio1_000473; Bio1_000962; Bio1_001451; HMS1920I09; HMS2091O11; HMS2232M13; HMS3260N17; HMS3372J18; HMS3435F10; HMS3715D13; Pharmakon1600-01500155; NoDoz Caplets and Chewable Tablets; Caffeine 10 microg/mL in Methanol; CS-M0795; Tox21_201685; Tox21_300010; Tox21_500228; BBL016491; caffeine (1,3,7-trimethylxanthine); Caffeine 100 microg/mL in Methanol; CCG-38825; NSC755917; PDSP1_001016; PDSP1_001235; PDSP2_001000; PDSP2_001219; STK177283; Propoxyphene Compound 65 (Salt/Mix); AKOS000121334; 5-26-13-00558 (Beilstein); ACN-034787; Bayer Select Headache Pain (Salt/Mix); Caffeine, anhydrous, 99%, FCC, FG; DB00201; LP00228; MCULE-3362813910; NSC-755917; SDCCGMLS-0064595.P001; SDCCGMLS-0064595.P002; SDCCGSBI-0050216.P005; IDI1_000730; 3,3,7-trimethyl-1H-purine-2,6-dione; NCGC00015208-01; NCGC00015208-02; NCGC00015208-03; NCGC00015208-04; NCGC00015208-05; NCGC00015208-06; NCGC00015208-07; NCGC00015208-08; NCGC00015208-10; NCGC00015208-11; NCGC00015208-12; NCGC00015208-13; NCGC00015208-14; NCGC00015208-15; NCGC00015208-16; NCGC00015208-17; NCGC00015208-18; NCGC00015208-20; NCGC00015208-29; NCGC00090699-01; NCGC00090699-02; NCGC00090699-03; NCGC00090699-04; NCGC00090699-05; NCGC00090699-06; NCGC00090699-07; NCGC00090699-08; NCGC00090699-09; NCGC00168808-01; NCGC00168808-02; NCGC00254057-01; NCGC00259234-01; NCGC00260913-01; AC-12774; AS-15340; Caffeine, SAJ special grade, >=98.5%; component of P-A-C Compound (Salt/Mix); O926; component of A.S.A. Compound (Salt/Mix); SBI-0050216.P004; DB-023002; WLN: T56 BN DN FNVNVJ B1 F1 H1; EU-0100228; FT-0664195; N1379; N2379; 3378-EP2269610A2; 3378-EP2275420A1; 3378-EP2277848A1; 3378-EP2277867A2; 3378-EP2280003A2; 3378-EP2284160A1; 3378-EP2289510A1; 3378-EP2295409A1; 3378-EP2295434A2; 3378-EP2301937A1; 3378-EP2305219A1; 3378-EP2305662A1; 3378-EP2305671A1; 3378-EP2305677A1; 3378-EP2305682A1; 3378-EP2305695A2; 3378-EP2305696A2; 3378-EP2305697A2; 3378-EP2305698A2; 3378-EP2308562A2; 3378-EP2308840A1; 3378-EP2308867A2; 3378-EP2308870A2; 3378-EP2308879A1; 3378-EP2311801A1; 3378-EP2311802A1; 3378-EP2311803A1; 3378-EP2311806A2; 3378-EP2311808A1; 3378-EP2311829A1; 3378-EP2311842A2; 3378-EP2314588A1; 3378-EP2314590A1; 3378-EP2314593A1; 3378-EP2316457A1; 3378-EP2316458A1; 3378-EP2316825A1; 3378-EP2316826A1; 3378-EP2316827A1; 3378-EP2316828A1; 3378-EP2371814A1; BIM-0050216.0001; C07481; D00528; Q60235; 1,3,7-trimethyl-3,7-dihydropurine-2,6-dione; 1H-Purine-2, 3,7-dihydro-1,3,7-trimethyl-; AB00051930-09; AB00051930_10; Caffeine, purum, anhydrous, >=99.0% (HPLC); 3,7-dihydro-1,3,7-trimethyl-1H-purine (9CI); Caffeine, anhydrous, tested according to Ph.Eur.; L000155; 3,7-Dihydro-1,3,7-trimethyl-1H-purin-2,6-dion; Caffeine, Sigma Reference Standard, vial of 250 mg; SR-01000075187-1; SR-01000075187-4; SR-01000075187-7; SR-01000075187-8; BRD-K02404261-001-02-7; BRD-K02404261-001-03-5; BRD-K02404261-001-07-6; Caffeine, certified reference material, TraceCERT(R); Caffeine, meets USP testing specifications, anhydrous; Melting point standard 235-237C, analytical standard; 1,3,7-Trimethyl-3,7-dihydro-1H-purine-2,6-dione #; Caffeine, British Pharmacopoeia (BP) Reference Standard; Caffeine, European Pharmacopoeia (EP) Reference Standard; F3371-0262; Z112207564; Caffeine 2000 microg/mL in Water:Methanol (81:19 g/g); 07E4FB58-FD79-4175-8E3D-05BF96954522; 3,7-Dihydro-1,3,7-trimethyl-1H-purin-2,6-dion (coffein); Caffeine solution, analytical standard, 1.0 mg/mL in methanol; Caffeine, United States Pharmacopeia (USP) Reference Standard; Caffeine, Pharmaceutical Secondary Standard; Certified Reference Material; Caffeine for system suitability, European Pharmacopoeia (EP) Reference Standard; Caffeine melting point standard, United States Pharmacopeia (USP) Reference Standard; Caffeine solution, 1.0 mg/mL in methanol, ampule of 1 mL, certified reference material; 114303-55-8; Caffeine Melting Point Standard, Pharmaceutical Secondary Standard; Certified Reference Material; Caffeine, PharmaGrade, EP, Manufactured under appropriate GMP controls for pharma or biopharmaceutical production; Mettler-Toledo Calibration substance ME 18872, Caffeine, analytical standard, for the calibration of the thermosystem 900, traceable to primary standards (LGC)