Growth of the CAS Chemical Registry System Feb02
Substances Substances on file Year Registered at year end 1965 211,934 211,934 1966 313,763 525,697 1967 270,782 796,479 1968 230,321 1,026,800 1969 287,048 1,313,848 1970 288,085 1,601,933 1971 351,514 1,953,447 1972 277,563 2,231,010 1973 437,202a 2,668,212 1974 319,808 2,988,020 1975 372,492 3,360,512 1976 347,515 3,708,027 1977 369,676 4,077,703 1978 364,226 4,441,929 1979 346,062 4,787,991 1980 353,881 5,141,872 1981 424,230 5,566,102 1982 361,706 5,927,808 1983 418,905 6,346,713 1984 563,390b 6,910,103 1985 544,618b 7,454,721 1986 628,966b 8,083,687 1987 610,480b 8,694,167 1988 602,465b 9,296,632 1989 615,987b 9,912,619 1990 663,342b 10,575,961 1991 684,252 11,260,213 1992 690,313 11,950,526 1993 680,230 12,630,756 1994 777,212c 13,407,968 1995 1,186,334c 14,594,302 1996 1,269,246c 15,863,548 1997 1,376,942c 17,240,490 1998 1,679,913c 18,920,403 1999 3,548,161c 22,468,564 2000 6,031,378 28,499,942 2001 6,751,153 35,251,095 2002d 39,000,490 [ For up-to-date count click here ] |
a Registry III implementation added 77,650 substances. b Input of substances indexed prior to 1965 added 140,760 in 1984, 151,431 substances in 1985, 165,705 substances in 1986, 119,888 substances in 1987, 51,253 substances in 1988, 44,112 substances in 1989, and 14,550 substances in 1990. c Registered substances included biosequences as follows: 135,987 in 1994, 481,799 in 1995, 555,133 in 1996, 797,127 in 1997, 1,019,257 in 1998, 2,818,123 in 1999, 5,131,250 in 2000, and 5,164,601 in 2001. d As of Fri May 17 19:10:15 EDT 2002 Count 19,733,471 organic and inorganic substances 19,267,019 sequences Total 39,000,490 chemical substance registrations
source: Statistical Summary 1907-2001 CAS1652-0202 Chemical Abstracts Service February 2002
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